Xperia Z Network Problem - Xperia Z Q&A, Help & Troubleshooting

Hi,
I'm using Xperia Z c6603. I face a different type of problem. My phone shows all the signal bars yet I'm not able to recieve any phone calls or dial them. I replaced my sim card, yet tit didnt help. Can you guys help me out. I have also flashed my phone.

CyrilThomas92 said:
Hi,
I'm using Xperia Z c6603. I face a different type of problem. My phone shows all the signal bars yet I'm not able to recieve any phone calls or dial them. I replaced my sim card, yet tit didnt help. Can you guys help me out. I have also flashed my phone.
Click to expand...
Click to collapse
Flash full stock ftf and try again

I tried but it didn't help. Any other suggestions

guys please help me out with this, it is very irritating

Try to keep your phone in 2g only mode. When i keep 3g only only mode i sometimes can't receive call from other party. But 2g only mode solved my problem....
Sent from my C6602 using xda app-developers app

How do I shift it to 2g mode?

menu->settings->more..->cellular network->network mode-> Only GSM
PS. type: *#*#4636#*#* and check in "phone info"
signal strength
GSM service(if enabled)
In old galaxy spica I had similar problem and I had disabled GSM(dunno why) and after second full flash of fresh stock ROM It was working again.

its not helping
I tried everything possible.

So maybe we start from beginning...
Few quick question before we can help you:
1. When those problem started?
2. After what? did you flash custom rom or Kernel ?
3. You had any app/script that could modify your phone?
4. You had ANY hardware problem before?
5. Your phone fall to the ground?
6. Did it have any contact with water?
7. What system do you have now.
8. did you check sim slot?
9. do you have signal strength in this menu that i post earlier?

1. This problem started a month back
2. It all started suddenly, I am on the stock rom without root
3. No I dont have any app that can modify my phone
4. Yes I had a faulty battery problem which was fixed
5. NYes once it had but it was a long time back before the problem started.
6. No it did not have contact with water
7 I use the stock android 4.4.4 kitkat
8 Yes I have checked my sim card slot, I have also replaced my sim a couple of times
9. Yes I have signal strength -79dbm and 25 asu
My sim works well with my other phones. Is it a hardware issue?

I think Im getting a clear view of the problem, my phone isnt able to shift from 3g to 2g I guess. I came to this place where only 2g works, I had my network mode setting as Wcdma(preffered)/gsm, its reluctant to shift. Is it a hardware problem?

Hmm.... If you have signal and phone see network its not hardware problem. To be honest its more like system or more specific kernel problem in 4.4.4 I say this because you ares sixth person who i know that have network problem in 4.4.4
For examle after flashing kk on my phone i have looooooots of reboots if i have 3g network on, and my phone swith to 2g if its in sleep mode.
My friend also have problem similar to yours but it cant use phone function if its have LTE enabled.
Best part is that when he flashed 4.3 problem is still there, but he didnt had it before when he had 4.3
I cant flash any other system now(i use phone too often )so i dont know if i also would had this problem...
So if you can, you could flash even 4.2/4.3 full clean rom and check, just to be sure. Its a bit "extream" downgrade but flashing it and checking its max 1h...
Probably like always its small weird bug or specific system setting problem, maybe different region rom...
So for now you could check other rom, even branded and downgrade to your old 4.3 to see if you still have such problem.

Seriously its a relif that its not a hardware problem yet.
I also flashed the lower version of the kernel. I am facing the same problem . I use the local region ROM only,
I think Im gonna give up on sony now

Hi there
You are not alone, I am also facing this issue and do not know how to resolve it too.
Sometimes when I try to call (full bars on) it makes a bipbip then Call not possible...
Same issue while switching from GSM to H... Most of the time I have to reboot and let it settle for a while.
I am suspecting my network provider
Sent from my C6603 using XDA Free mobile app

I called up the service provider, it seem to get fixed for a day but again the same problem continues
I'm tired of this, the phone guys can't do anything and neither can the service providers
Such an irritating bug by sony

Did anyone get a solution to this problem?
This is very annoying

Same problem,posible solution temporary.
I'm in spain,having a virtual operator sim called ono,is using vodafone infrastructure.Is needed to have roamin allways activated for data and call to work properly.When stucks to connect,i put in flight mode 1min.With orange sim no problems.With ono sim in a windows phone i had no problem.Now i demanded a sim 4g,will see if are changes.

Woahh happend to me as well , but it happend after turning on mobile data in 15 minutes my network stopped .

silviuilie said:
I'm in spain,having a virtual operator sim called ono,is using vodafone infrastructure.Is needed to have roamin allways activated for data and call to work properly.When stucks to connect,i put in flight mode 1min.With orange sim no problems.With ono sim in a windows phone i had no problem.Now i demanded a sim 4g,will see if are changes.
Click to expand...
Click to collapse
Did it help you??

Related

Loosing network signal

Hi!
After weeks of flawless function my Xperia can not find my carriers phone network.
I have updated the phone to the new ROM but that does not help.
The phone finds the SIM card and asks for the code.
Strangly it can connect to internet through my carrier (Tele2).
But I can not get a connection to the phone network and make a normal phone call.
Is something wrong with the phone?
NO, cause with another carrier (Telenor) everything works pefect.
Then obviously something is wrong with my carrier (Tele2) or the SIM-card.
NO, cause when I put my Tele2 SIM-card in another device (Ipaq 6515) it works perfect.
The Ipaq is not a 3G-phone. Can that have anything to do with it?
I'm getting lost here, all help is appreciated.
(ORIGINAL MESSAGE
Hi!
After weeks of flawless function my Xperia has started to lose it's phone network.
I notice it after I wake my phone up from stand by mode.
It doesn't help to turn the phone option off and on in Comm manager, but it has sometimes helped turning flight mode on and off.
Other times I had to restart the phone.
This happens a couple of times every day, after long times of not using the phone. I have not been able to trigger this problem, so I don't know what causes it or exactly when it happens.
Strangly it can connect to HDSPA while it has lost the phone network.
I have also experienced som freezes when I'm flipping between the panels to much.
All help is appreciated, thanks.
It would be helpful if you could give us more information.
What ROM are you using
Which carrier you have
etc.
mo.ammi said:
It would be helpful if you could give us more information.
What ROM are you using
Which carrier you have
etc.
Click to expand...
Click to collapse
I'm using:
ROM 1.02.936.3
Radioversion 1.06.25.29
The carrier is Swedish Tele2.
In Sweden we have GSM-900 and GSM-1800.
Tele2 also provide me with UMTS and HSDPA.
Today the problem became worse.
Even after repeated soft restarts it refused to find the phone network.
Then I change SIM-card to another carrier and it found the network.
I also tried the SIM-card that's giving me problems in another device. Works fine.
So both SIM-cards works. I'm now gonna go with the new carrier during the day to see if the problem come back.
If anyone have any ideas, please help.
krion said:
Today the problem became worse.
Even after repeated soft restarts it refused to find the phone network.
Then I change SIM-card to another carrier and it found the network.
I also tried the SIM-card that's giving me problems in another device. Works fine.
So both SIM-cards works. I'm now gonna go with the new carrier during the day to see if the problem come back.
If anyone have any ideas, please help.
Click to expand...
Click to collapse
All I can say that Xperia sometimes looks for the signal a bit longer it should IMO,
but I also know that carriers have many many problems usually and they're also often responsible for signal drops in some places too.
I know that 'cos I was talking to my carrier many times about it and learned something about it...
have u tried hard resetting the phone or re-installing the software? ..
if u run the sony update software it will give u the option to re-install your phones software - not sure if that has the same effect as a hard reset ..
probably worth trying
Amanox said:
have u tried hard resetting the phone or re-installing the software? ..
if u run the sony update software it will give u the option to re-install your phones software - not sure if that has the same effect as a hard reset ..
probably worth trying
Click to expand...
Click to collapse
Thanks for answering, I have now done a total reinstall and updated the phone to the newest R2... ROM.
The problem remains.
The phone finds the SIM card and asks for the code.
It can connect to internet through my carrier (Tele2).
But I can not get a connection to the phone network and make a normal phone call.
Is something wrong with the phone?
NO, cause with another carrier (Telenor) everything works pefect.
Then obviously something is wrong with my carrier (Tele2) or the SIM-card.
NO, cause when I put my Tele2 SIM-card in another device (Ipaq 6515) it works perfect.
I'm getting lost here, more ideas is appreciated. Tomorrow I will call Tele2 support.
Have you tried disabling 3G/HSDPA?
Chance that you have very poor 3G on your phone, whilst the IPAC is picking up ok 2G.
artesea said:
Have you tried disabling 3G/HSDPA?
Chance that you have very poor 3G on your phone, whilst the IPAC is picking up ok 2G.
Click to expand...
Click to collapse
Thanks for replying.
I disabled HSDPA/HSUPA in the advanced network menu. But it didn't help.
I also tried to choose GSM only in the phone seetings menue. But I could not even change the setting. Just got an error message about not being able to change the network (or something similar).
Is there any other setting that might be worth trying?
krion said:
Thanks for replying.
I disabled HSDPA/HSUPA in the advanced network menu. But it didn't help.
I also tried to choose GSM only in the phone seetings menue. But I could not even change the setting. Just got an error message about not being able to change the network (or something similar).
Is there any other setting that might be worth trying?
Click to expand...
Click to collapse
Having worked for several phone companies a few years at customer service I know what the procedure is.
-First thing they do is ask you to do a "crosstest", try your SIM in another phone and see if that works.
-You'll tell them that you did that and everything works fine when you use another phone.
-They'll automatically conclude that there's something wrong with your phone (correctly)
-They'll ask you if you could do a hard reset ( You did that too)
-Then maybe they'll try and reset the network (which almost never works)
Basically they'll have no other choice then for you to return it and have them look at the problem / replace your phone.
I don't think we here can help you with your problem
Good luck and keep us posted
Get a new SIM card. I've seen problems like this before, and an updated SIM card solved it.
The best way would be to test your SIM card in a similar phone, the ipaq not being close because it's not even 3G.
maedox said:
Get a new SIM card. I've seen problems like this before, and an updated SIM card solved it.
The best way would be to test your SIM card in a similar phone, the ipaq not being close because it's not even 3G.
Click to expand...
Click to collapse
I'm so confused right now.
Got my new sim card today, problem remains.
I call the carrier support and after they've looked the IMEI-number up they say that the phone is barred by an external operator. They won't tell me the reason and by what operator.
So I call the other carriers support and after they've done a IMEI-search they say that the phone is not locked in any way, by them or any other operator. After have been talking to Xperia support they come to the same conclusion. The phone is not locked but agree to that something is wrong, with phone or carriers, and they want me to try with a third carrier.
Final
I've handed in my phone to the seller and got another one back instead.
The end
Exact same problem
Howdy folks,
I have the exact same problem: My Xperia has worked fine for a month. Suddenly I can't register with Tele2 network (tried another Tele2 card as well that didn't work) for calling but have access to data channel so I can surf. Got told by the Tele2 support that my phone was fu**ed up. Got pissed off. Tried a sim for another provider (Telenor) that worked. Called the Tele2 support again. They noticed that I have an old (2g) sim, so they will send a new (3g) card to test if that fixes this mess. It should arrive late this week or early the next. Can't wait...
I'll keep you posted in this thread (or, if I should instead have made a new thread, a moderator may spank me and I will do better).
/Swedish Dave
Nope, new sim-card didn't fix it. But I have found at least one other xperia-user with this problem...
bad GSM signal
I have a X1
rom 1.03.931.10
radio 1.10.25.18
protocol version 52.56.25.29W
and since from the start I have bad GSM signal I have like 1-2 lines onli and it go up to 5line but onli from time to time (and then it drops again to 1-2line or none but If Itray to call is working or I get called but I can berly hear them bicose of the bad signal) on O2 network and in T-mobile is the same no mather wher I'm in town or outside of town; I'm in UK
is the phone damaged?? or...
sry for my bad english
My phone does the same thing
My x1 has had no problem with phone function or network. However, from the last week, the signal began to be lost sometimes, and the machine turned off automatically. and finally today, there is no signal at all.
MY SIM card works with other phones, so, I thought it might be software problem, and hard reseted with new rom. However, still no signal. It keeps looking. Does anyone have the same problem, and hopefully, solution?
I´m using my X1i with Tele2 as my service provider,but i don´t have any problems with signalstrength.. Works just fine..
speederTM said:
I have a X1
rom 1.03.931.10
radio 1.10.25.18
protocol version 52.56.25.29W
and since from the start I have bad GSM signal I have like 1-2 lines onli and it go up to 5line but onli from time to time (and then it drops again to 1-2line or none but If Itray to call is working or I get called but I can berly hear them bicose of the bad signal) on O2 network and in T-mobile is the same no mather wher I'm in town or outside of town; I'm in UK
is the phone damaged?? or...
sry for my bad english
Click to expand...
Click to collapse
I know I should've introdouced myself first, and that this is a strange first post, but:
HOLY SMOKES!!!
Xperia has FIVE reception bars????!!!!!
I always thought that 3 is the max value, since it only happened once that it went up to three bars, rest of the time it's maximum 2, usually 1.
I am also on Tele2 carrier, in Sweden that is, and since yesterday, I have no reception AT ALL.
Nothing.
Tried turning off 3G(or whatever it's called), nothing happens.
Tested with 3 other cards (one Tele2, one Telenor, one Telia) - all seem to be working okay. Except that the Tele2 one has slightly lower reception than the others.
Tested with 3 other phones as well - iPhone 3GS, Nokia 5800 Xpress Music, HTC Desire. All of them worked perfectly. Full coverage on that super-fast network thingy(the 3G symbol on iPhone).
Internet is just flowing on other phones - but Xperia is just falling behind in the most important section - reception.
Calls get dropped (2/3 of the calls), I must send same message at least 3 times in order to get it sent, Internet is crappy - if there's any at all.
Any kind of guidance is mostly appreciated.
P.S. A bit of those numbers which seem to be important:
Microsoft Windows MobileR 6.1 Professional
CE-OS 5.2.19608 (Build 19608.1.2.60)
ROM-version: 1.05.936.9
ROM-date: 04/19/09
Radioversion: 1.14.25.55
Protocol version: 1.0.11842.32680
Since all of you seem to have problems with one and the same carrier (Tele2) why don't you simply switch to another one? I once had a problem that was very alike the one described here and after several unsuccessful attempts of the carrier to fix it I simply switched to another one and all my problems were gone.

WEIRD! Emergency call only! O_o

This one is pretty *beep* up! The phone was working pretty fine last time I looked at it (30 minutes ago), I put it in my pocket and had dinner (as always), then I took it out to make a phone call and it says just "Emergency call only" instead of showing my phone operator (3 ITA). I tried rebooting, no luck! Still the same.
Strange thing is that it has signal (full) but I can't make/receive calls or use data network. If I go under Settings -> Wifi -> Mobile networks settings and I look for operators it searches and I can see all of them (mine included) but I cannot select it!! Neither mine nor another one (TIM, which is the roaming default one for my operator when there's no signal)...it just says "Unable to connect. Try later".
Weirdest thing of all is that I AM RECEIVING PUSH EMAILS from gmail!!!
Anyone has a clue about this??? Has it ever happened to anyone?
Btw, I'm using zeroblaster rom, which is based on official italian froyo firmware...everything was working so good until ten minutes ago!
Hope I don't have to reflash...
Just got weirder: put my sim on another phone...it registers without problems on the network.
Then put the other's phone's sim on my sgs...it registers without problems.
Then switched again: Emergency calls only
WHAT THE ****??!? (what are we? children? sorry mod...lol)
carlocb said:
Just got weirder: put my sim on another phone...it registers without problems on the network.
Then put the other's phone's sim on my sgs...it registers without problems.
Then switched again: Emergency calls only
WHAT THE ****??!? (what are we? children? sorry mod...lol)
Click to expand...
Click to collapse
Sounds like it may be ur sim card but its weird it would work in another phone. Perhaps its a mix of ur sim and ur rom. A flash may be ur only fix...
Sent from my GT-I9000M using XDA App
yiannisthegreek said:
Sounds like it may be ur sim card but its weird it would work in another phone. Perhaps its a mix of ur sim and ur rom. A flash may be ur only fix...
Sent from my GT-I9000M using XDA App
Click to expand...
Click to collapse
It is WAY weird imho! The weirdest thing being that I'm still receiving gmail's pushes after 5-6 reboots while it keeps saying "emergency calls only".
Also I saw that when the phone boots, while it's loading the launcher, widgets, etc. it gets the connection for like 2-3 seconds it shows my operator (in the lockscreen), then it switches to "emergency calls only"...
I'll wait another hour (maybe as the issue came out of nowhere it'll go away? ) then I'll try reflashing...since I had to change to k9 anyway to fix the /system corruption etc. -.- I'm already backing-up...
Hope the flash will fix this though...it's really a pain in the ***
carlocb said:
It is WAY weird imho! The weirdest thing being that I'm still receiving gmail's pushes after 5-6 reboots while it keeps saying "emergency calls only".
Also I saw that when the phone boots, while it's loading the launcher, widgets, etc. it gets the connection for like 2-3 seconds it shows my operator (in the lockscreen), then it switches to "emergency calls only"...
I'll wait another hour (maybe as the issue came out of nowhere it'll go away? ) then I'll try reflashing...since I had to change to k9 anyway to fix the /system corruption etc. -.- I'm already backing-up...
Hope the flash will fix this though...it's really a pain in the ***
Click to expand...
Click to collapse
the same thing that is happening to me (H3G italy)... really strange
enlightener said:
the same thing that is happening to me (H3G italy)... really strange
Click to expand...
Click to collapse
Sounds like your network (3) is down. Id call them to see what is going on...
enlightener said:
the same thing that is happening to me (H3G italy)... really strange
Click to expand...
Click to collapse
Are you kidding me?? What, right NOW?? Could it be something wrong with H3G? Did you putting sim on another phone? Getting weirder and weirder lol!!!
What rom/firmware are you using??
yiannisthegreek said:
Sounds like your network (3) is down. Id call them to see what is going on...
Click to expand...
Click to collapse
No that's not it, because putting H3G sim on another phone WORKS!!
And anyway, when H3G's down it uses TIM as roaming...this time I cannot even select TIM as operator, it refuses! And normally you can always use tim in roaming if you want (even when H3G has signal...)!
carlocb said:
No that's not it, because putting H3G sim on another phone WORKS!!
And anyway, when H3G's down it uses TIM as roaming...this time I cannot even select TIM as operator, it refuses! And normally you can always use tim in roaming if you want (even when H3G has signal...)!
Click to expand...
Click to collapse
Hmmmm... That is weird alright.
If you purchased your SGS through your carrier H3G I would still call them to report it as there are now 2 of you experiencing the same issue so it cant just be phone related and if it is then they will have to honor your warranty to replace or fix it (both of you)...
It's happening to me too.. i also use H3G Italy on my Galaxy S and i have this issue since around 19:00 this evening with my work SIM card
I have a Tayutama 1.0.0 ROM based on the JPM Froyo ROM.. it's the first time this is happening to me..
lionita said:
It's happening to me too.. i also use H3G Italy on my Galaxy S and i have this issue since around 19:00 this evening with my work SIM card
I have a Tayutama 1.0.0 ROM based on the JPM Froyo ROM.. it's the first time this is happening to me..
Click to expand...
Click to collapse
Well... That is 3 of you so it must be carrier related in some way. Again... Call your carrier and explain what is happening. Explain that when you put the sim into a different device it works ok but in the SGS all you can do is make emergency calls and they should be able to tell you what is going on.
Make sure to post back as I am now interested in seeing what your issue is / was...
carlocb said:
Are you kidding me?? What, right NOW?? Could it be something wrong with H3G? Did you putting sim on another phone? Getting weirder and weirder lol!!!
What rom/firmware are you using??
Click to expand...
Click to collapse
JP5 (i tried another one, don't remember what version but it's the same, it is not firmware related)
in settings->about phone->status it says:
network: 3 ITA
mobile network type: UMTS
service state: out of service
mobile network state: connected (and it works... )
but ... int the status bar it shows "Only emergency calls"...
i haven't tried another phone yet... will do now...
edit: tried my sim on another phone and another sim on my phone.... it works....wtf?
enlightener said:
JP5 (i tried another one, don't remember what version but it's the same, it is not firmware related)
in settings->about phone->status it says:
network: 3 ITA
mobile network type: UMTS
service state: out of service
mobile network state: connected (and it works... )
but ... int the status bar it shows "Only emergency calls"...
i haven't tried another phone yet... will do now...
Click to expand...
Click to collapse
You just answered your own question I think. "service state: out of service" says it all I believe even if the sim cards DO rgister on another phone for whatever reason.
The fact is the they dont register on your Galaxy S so call them and report the issue and they should be able to help you...
Yeah well, you see, that could be a problem because...H3G has a TERRIBLE customer care, lol! Basically the thing is you can't call them...you need to send an email, and an answer will arrive 2-3 days later. That's not good enough for me! If it doesn't get fixed tomorrow I'll go directly to a 3shop and they'll call someone higher to understand this. Hope they fix it soon though!
Anyway...now I have a strong curiosity: could it be JUST the SGS? If so...WHY???? I tried putting the simcard on a Nokia E71 and it works...does anyone have another android phone with H3G? Could it be somehow "system"-related? Because I can't figure out why a specific phone device shouldn't work point-blank with my operator! And that's even a phone they sell themselves!!
Rebooted and now it WORKS! THANK GOD (even if I'm atheist....)
Still would like to know why it did this!
I had a similar problem where if I was in an area with bad reception it would default to emergency calls only. But the funny thing is when I go into the menu settings I can see my carrier and when I try to select it, it says network unreachable. Eventually I would get signal but the tab still says emergency calls only. Tried making calls but it wouldn't allow.
Initially to rectify the problem I rebooted the phone and that worked but got annoying. So I realised that if I left it for a couple of mins whenn it had reception it would fix itself. As of recently (last 2 months) I haven't any problems.
Btw i'm on jpm and my carrier is 3 australia. It's rubbish service
Sent from my GT-I9000 using XDA App
Hello,
Same thing happening to me... It must have something related to signal strength, i went downtown and phone was perfectly fine.
But at home it keeps loosing signal, i dialed *#*#0011#*#* and it shows changing BAND... as if it was searching for service on different bands...
But the thing is, i tried inserting the SIM on other 2 phones and i get a FULL signal, so i guess signal is coming pretty intense here... why is the SGS loosing it? i have no idea...
By the way, i am from Brazil, and that started happening after i flashed my rom to FROYO VJJPA..
me too, has no signal at home but works for another phone.
gentefina said:
Hello,
Same thing happening to me... It must have something related to signal strength, i went downtown and phone was perfectly fine.
But at home it keeps loosing signal, i dialed *#*#0011#*#* and it shows changing BAND... as if it was searching for service on different bands...
But the thing is, i tried inserting the SIM on other 2 phones and i get a FULL signal, so i guess signal is coming pretty intense here... why is the SGS loosing it? i have no idea...
By the way, i am from Brazil, and that started happening after i flashed my rom to FROYO VJJPA..
Click to expand...
Click to collapse
Come on guys help us out!
My battery drains because the cell keeps searching for signal!
gentefina said:
Come on guys help us out!
My battery drains because the cell keeps searching for signal!
Click to expand...
Click to collapse
Same is happening to me. Serive state says out of service so could registering the sim card to phone be the actual isuue?

[Q] loosing Network Signal and it don't come back!

Hi Folks,
how in the topic, im loosing my signal at point where my signal is weak. if i lost it, i can run around to get it back to write messages or call someone. it doesnt work, because my phone say's "only Emergency calls". i wait one hour but the phone can't connect to my provider. The radio is at the moment 32.36.00.28U_4.06.00.12_7, i've already tried newer and older version of the radio img but always the same issue. From the beginning when i had the phone, it sometimes doesn't regognize my sim card, i have tried everything to get it to work (new rom or radio img) but always it fails. on the next day without any changes the phone works again with the same sim card. So now here is my question....... what the HELL can i do to bring it back to work, so it dont lose the signal in weak areas, and if the phone loses it, what shall i do to automaticly reconnect the phone automaticly to the provider. and airplane mode is no soloution for me. thanks for answer.
Have you tried another SIM card in there to see if the problem still occurs?
Sometimes the card itself needs replacing. Just a thought..!
this i havn't tried out yet, but i tried my actual sim card at the phone of my wife and it works a whole day without connection lose. I'm just thinking its a software problem maybe its the wrong radio version.
No "wrong radio version" will lose connection and fail to reconnect.
It's either your ROM or (most probably) HW problem.
You can try to wipe and install a clean ROM and see if the problem persists. If it does - use the warranty.
which rom would u suggest ? I tried CM6 / CM7 / MIUI nearly all modded roms here. The problem is to try out if the rom works i have to go out to a point where the signal ist weak, and hope for a signal lost. Sometimes it works and i get a reconnect to network and sometimes it doesn't work. in zones where the signal is strong i haven't any trouble. Did i get any problems by HTC if my phone is unlocked? I already had it gave to a repair 3 month ago with a broken usb connector and there was no trouble with warranty at unlocked phone but what is now? can they change their opinion ?
I got it. The Problem was the the Phone has to set the Network search to manual and not to automatic search. it works now for over 1 day and it seem that is now no problem with lost signal. Thanks for Help. But i just wondering why i have to chose manual network search an not automatic.

[Q] Fed up with Galaxy Ace

Hi Team,
I have heard lot about this forum and hope to get some gud suggestions from you guys.
I bought my Samsung Galaxy ace GT-S5830 with android 2.3.6 Gingerbread OS 6 months back but slowly I started facing few problems when my friends noticed and told me that your phone sometimes says switch off.
I also realized that sometimes even if the airtel network is there still i get an error message that mobile network not available I had to switch off the phone to get it normal.
Again people text me but it goes on pending and gets delivered after hours. I showed this problem to the service center they flashed my mobile but the problem persist I also tried changing my sim card but still all in vain. Now i am literally fed up with this phone.
Please assist me I dont know wat to do :crying:
Note: The phone is not rooted.
Thank you
err, are you sure this is because of the phone..? not the network..? because i never face any of the problems you mention..
may be you should try flashing stock rom with newest baseband for your region, find it on sammobile..
musf said:
err, are you sure this is because of the phone..? not the network..? because i never face any of the problems you mention..
may be you should try flashing stock rom with newest baseband for your region, find it on sammobile..
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Click to collapse
He said the service centre guys reflashed the rom. but agree that the sms thing could be network problem.
Faulty battery/pins (Switch offs)
Faulty hardware (Antenna?)
That's all I can identify.
Hi Guys !!!
Thanks for sharing your views
@demiorkan
The mobile automatically does not gets switched off but i need to do it manually as it keeps on prompting the error message "Mobile network not available" though I can see full network on my mobile.
I would really appreciate if I get any suggestions from your side.
Let me know if any more information is required.
If you dont mind you could try flashing another stock rom and see if that works out. If it did not, then it's probably a hardware problem OR the network (as mentioned). Try your SIM card on another phone as well, that should prove if there is problem with the network or not.
Mostly it might be a firmware problem. Service center might not have flashed a new firmware but simply wiped and gave back. (can't be sure on that). So I recommend on using ODIN and flash new firmware. Google is your best friend on this.
Secondly about the network, Turn on flight mode once and turn it off, you'll get the signal. You can even do some debugging by going to the testing menu (*#*#4636#*#*) and toggle the radio and the preferred connection type and stuff. But if the place where you are is such that you get low signal, then don't try any things on phone as it's ultimately the network problem. Trust Me, the place where I stay, I rarely get proper reception and Even I'm on the same network. Flight Mode trick saves the unnecessary reboot.

[Q] No service / No sim card

A. Introduction: I had the HTC Desire C working smooth and fine. Then one fine day, I realized that the microphone is not working properly, the person at the other side of phone call would not be able to listen to me unless I'd literally shout over phone. So I gave the phone to the HTC service center because it was under warranty. They changed some parts and handed back the phone to me. But the problem was still there. I again submitted my phone. They changed the same parts again and now the mic was working classic, phone was working smooth.
B. Twist in the scene: Just after few days, I was on my way to home after some work and I noticed that phone had a cross (x) against the signal and when I pulled down the notification thing, it said NO SERVICE. This used to happen a lot of times from then onward. Switching to Flight Mode and then reverting back (OR a restart OR a sim pullout and insert again) would sometimes fix the issue, but only temporarily. Sometimes after reboot, it would say NO SIM CARD, sometimes NO SERVICE and sometimes proper functioning with 2-3 bars.
C. Attempts from my end: I thought that they have messed the sim card slot while assembling my phone back and it is a hardware issue. But I was finding it hard to believe. I tried switching to GSM ONLY, then it would show full bars, but again only temporarily -- later NO SERVICE again.
The same SIM card in other phones (standard Nokia b&w phones aka hammers) shows full bars. And I have tried 3+ sim cards in the HTC, but all say NO SERVICE after sometime, maybe due to some activity (connecting internet) or just randomly on its wish.
I studied about radios(modems/baseband) and found that they are drivers and they also decide when and how to switch between 2G and 3G network etc.
D. Other Information and Background: Many times, when there is NO SERVICE error, when I check the Signal Strength it says -83dBm 15asu, so that is pretty hard to digest. The other times it says 0dBm 99asu, which should be obvious for a NO SERVICE error.
With point number E.2. in this post I have unlocked the bootloader and rooted my phone, installed CWM recovery, took a backup.
E. Options that are/aren't available from my perspective and my doubts:
1. Warranty period is over now, and I do not want to take my phone to the service center.
2. Can flashing a custom rom and radio fix this issue? If yes, direct me to some reliable ROMs for the same. CM10 build#3 (from here) didn't boot.
3. I have a Linux laptop, so options strictly based on Windows PC will not apply.
Has anyone faced similar issue? I found many pages with similar issue, but nowhere was the exact solution/troubleshoot mentioned.
I did have a problem with sim cards. What I tried doing is borrowing a friends sim card to see if it works on my phone. To my relief it worked and meant that my current one just died. So I went to one of the offices of my Phone plan providers and just changed it and it worked. If you can try that and give back results, it would be awesome.
Depending on the age of your SIM card can give those errors but as you stated you tried other SIMS and same occurred so my guess is it's either Hardware or Baseband Software, unless there's a Baseband update or simply reflash same Baseband, if it still persists I'd more suspect Hardware.
Bashing away at my HTC Desire C
me4488 said:
I did have a problem with sim cards. What I tried doing is borrowing a friends sim card to see if it works on my phone. To my relief it worked and meant that my current one just died. So I went to one of the offices of my Phone plan providers and just changed it and it worked. If you can try that and give back results, it would be awesome.
Click to expand...
Click to collapse
I, myself have a lot of sim cards to check this and I have already tried other sim cards. Some cards are not even recognized. Some are being recognized but it says NO SERVICE after sometime. Switching to Flight mode and back or restarting the phone or Going in Testing Mode > turning off radio > and turning it on again, sometimes solves the issue but only temporarily.
Antagonist42 said:
Depending on the age of your SIM card can give those errors but as you stated you tried other SIMS and same occurred so my guess is it's either Hardware or Baseband Software, unless there's a Baseband update or simply reflash same Baseband, if it still persists I'd more suspect Hardware.
Bashing away at my HTC Desire C
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Click to collapse
Probably. And that's why I installed mini CM10 and flashed the radio with the latest HTC Desire Radio (for CM), but it still says NO SERVICE and the same baseband version as it was saying with the stock ROM. :/
Even though the signal strength is -63dBm 25asu
Can you call or something if it is showing signal strength?
Sent from my HTC Desire C using XDA Premium 4 mobile app
rudi_j7 said:
Can you call or something if it is showing signal strength?
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Click to collapse
No, I wasn't able to call. And when I would search for a network it would say "Error while searching for networks"
I'm more likely to suspect the actual SIM card holder hardware and not the SIM Card itself or the Baseband (No errors reflashing and other SIM's no different than your own), the fact it's showing signal strengths but you're not getting onto the network suggests RADIO hardware is most likely working along with software but a hardware failure could just be 1 connection to the SIM
Q. Are all other SIM's working in other phones and does your SIM work in another phone?
If so I'd suspect the SIM Slot onwards.
Q. may or may not apply but possibly relevant, does Bluetooth and Wi-Fi still work?
Antagonist42 said:
I'm more likely to suspect the actual SIM card holder hardware and not the SIM Card itself or the Baseband (No errors reflashing and other SIM's no different than your own), the fact it's showing signal strengths but you're not getting onto the network suggests RADIO hardware is most likely working along with software but a hardware failure could just be 1 connection to the SIM
Q. Are all other SIM's working in other phones and does your SIM work in another phone?
If so I'd suspect the SIM Slot onwards.
Q. may or may not apply but possibly relevant, does Bluetooth and Wi-Fi still work?
Click to expand...
Click to collapse
Answer #1: Yes
Answer #2: Yes
Q. I still don't get that when I have flashed the radio, how is it still saying the same baseband version? Doesn't flashing a new radio change it?
Recent UPDATE: Somehow, the phone is behaving well... (always 3 bars or full 4 bars), after the mini CM flash and NOPE 750 flash. Initially it was NO SIM CARD or NO SERVICE but multiple reboots and pulling out and reinserting the sim card have made it this far. Let's see if this good behavior persists.
UPDATE: Back to the same state of disconnecting/No Service/No Sim Card
I still suspect the SIM slot as you could have disturbed what's known as a 'dry joint' essentially made it make contact until it disconnects again even with just a change in any kind of pressure (placing the cover on or placing it on a table).
Then again it could be down to ROM and Kernel, I wouldn't totally rule it out without going back to stock ROM and Kernel and seeing any change
Bashing away at my HTC Desire C
Antagonist42 said:
I still suspect the SIM slot as you could have disturbed what's known as a 'dry joint' essentially made it make contact until it disconnects again even with just a change in any kind of pressure (placing the cover on or placing it on a table).
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Click to collapse
Any DIYs to fix this?
Then again it could be down to ROM and Kernel, I wouldn't totally rule it out without going back to stock ROM and Kernel and seeing any change
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Click to collapse
That sucks!
UPDATE: The network seems quite reliable when I am on GSM only (2G only). That again indicates that somehow the problem lies in only the radio driver.
Any ideas?
Same Problem
I am facing exactly same problem on my HTC Desire C. Did lot of hard reset problem reappears after couple of days. got my phone reinstall OS at HTC service centre problem reappeared after a week.
Same sim is working fine in other phone, even got new sim still same problem.
Am confused if its hardware or software issue, problem comes only when phone is in GSM only mode, works fine on WCDMA only or AUTO mode.
But in WCDMA only since network is not good signals are low and in AUTO mode when signals are low it switches to GSM and if at that particular moment there is problem then NO SIGNALS.
Update, Phone fine. Help with the settings!
I checked a lot of sim cards and found that my phone is perfect! There is no hardware issue.
So I am presenting the present scenario. Please help!
I have 2 phones: HTC Desire C and a Nokia B&W aka hammer.
1. TATA DOCOMO sim card work fine on both phones.
2. AirTel sim card works fine in Nokia but HTC says "No Sim Card" regardless of the numerous attempts.
3. Reliance sim card (brand new, bought today) works fine in Nokia but HTC says "No Sim Card".
4. A friend's Reliance sim card was working fine in HTC.
If any Indian friend might help, then it would be great as this issue is more local specific I guess. Or any user who might have faced similar issue and then found a fix please help.
You tried Vodafone?
Sent from my HTC Desire C using XDA Premium 4 mobile app
rudi_j7 said:
You tried Vodafone?
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Click to collapse
Not yet.
And believe it or not, but the AirTel sim that I mentioned in my last post was working once I washed it with some alcohol. So it might indicate that the sim was old and dirty maybe.
But what about the new Reliance sim, I just bought it today and it works in Nokia. I'd have switched to Vodafone but I can't afford its high 3G plan rates as I have to maintain an MTS MBlaze for laptop as well.
And the thing that friend's Reliance sim works fine in my phone is troubling me even more.

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