I've had my GT-N7000 for about a year. It has been rooted and running various ROMs since I had it and has always worked wonderfully. I had settled on CM 10.1 about a month ago. Since the last 3-4 days I noticed that my 3G signal showed no bars from time to time. Normally, just a quick 'airplane mode' dip and everything would be fine.
2 days ago was still having the same problem and I had to completely turn off and on again to 'maybe' get a signal. If I got a signal, it would only stay there for a few minutes and then disappear.
I changed the SIM card yesterday just to be sure but I still had the same problem. The same SIM card works perfectly well in my GT-I9000 running CM 10.1 as well.
I cleaned the SIM slot contacts, verified the internal antenna wire and even flashed a few modems and still have short lived and intermittent 3G signal. Any idea about what could be happening? Could it be the 3G radio failing on me?
Thanks for any help.
JF.
Anyone?
Does this happen after you move from one area to another? For instance from work to home or Vice Versa?
same problem
Hi there,
I've got the same problem than you. I got my Note 1 year ago, and since few days, I've a problem with the SIM.
On boot or reboot, the SIM is perfectly recognized and works good. I can call without problem, and can connect to the wifi without problem. The problem is when I use 3g, the SIM is not recognize after 1-2 minutes. I mean, I can access internet, do whatever I want, for just a minute or two. After that, the signal drop instantly. I tried:
plane mode: doesn't come back to normal mode cause the phone says there no SIM card
change modem: don't resolve the problem on all XX*** modem for JellyBean
change ROM: I was on German-leaked 4.1.2 Stock ROM, i tried 4.1.2 Switzerland ROM (where I live), 4.1.2 custom ROM and cynogenmod 10.1 (4.2.2). Always the same problem.
Tonight I'll try another SIM in the phone, in the case that the SIM is the problem.
otherwise, I don't know what else to try...
Blancoaguila said:
Hi there,
I've got the same problem than you. I got my Note 1 year ago, and since few days, I've a problem with the SIM.
On boot or reboot, the SIM is perfectly recognized and works good. I can call without problem, and can connect to the wifi without problem. The problem is when I use 3g, the SIM is not recognize after 1-2 minutes. I mean, I can access internet, do whatever I want, for just a minute or two. After that, the signal drop instantly. I tried:
plane mode: doesn't come back to normal mode cause the phone says there no SIM card
change modem: don't resolve the problem on all XX*** modem for JellyBean
change ROM: I was on German-leaked 4.1.2 Stock ROM, i tried 4.1.2 Switzerland ROM (where I live), 4.1.2 custom ROM and cynogenmod 10.1 (4.2.2). Always the same problem.
Tonight I'll try another SIM in the phone, in the case that the SIM is the problem.
otherwise, I don't know what else to try...
Click to expand...
Click to collapse
sorry to late reply for this old thread but i have the exact same problem now and i got here searching for solution..
how did you fix your phone please??
Salamonti said:
sorry to late reply for this old thread but i have the exact same problem now and i got here searching for solution..
how did you fix your phone please??
Click to expand...
Click to collapse
You're ****ed if it's the same problem! I tried a lot of technique and the one I warn you about is changing the RIL. Useless waste of time and ****ed up everything. At the end I tried an app available on the play store for thé modem, can't remember which one. But hey, you're on the track!
Good luck
Blancoaguila said:
You're ****ed if it's the same problem! I tried a lot of technique and the one I warn you about is changing the RIL. Useless waste of time and ****ed up everything. At the end I tried an app available on the play store for thé modem, can't remember which one. But hey, you're on the track!
Good luck
Click to expand...
Click to collapse
Are you sure it is the radio causing the problem and not the antenna? I know on mine, the USB charge port can be a real PITA when it
goes bad, and I had to buy about 3 before I found one that worked properly. With the wrong one, the radio signal would fluctuate all
over the place, so that's why I wonder if it could be a bad antenna/connection/board problem, since it is contained on the same
board as the USB port?
Blancoaguila said:
You're ****ed if it's the same problem! I tried a lot of technique and the one I warn you about is changing the RIL. Useless waste of time and ****ed up everything. At the end I tried an app available on the play store for thé modem, can't remember which one. But hey, you're on the track!
Good luck
Click to expand...
Click to collapse
p51d007 said:
Are you sure it is the radio causing the problem and not the antenna? I know on mine, the USB charge port can be a real PITA when it
goes bad, and I had to buy about 3 before I found one that worked properly. With the wrong one, the radio signal would fluctuate all
over the place, so that's why I wonder if it could be a bad antenna/connection/board problem, since it is contained on the same
board as the USB port?
Click to expand...
Click to collapse
I had an update..
I figured out that when i change the network mode to GSM ONLY it runs very well and never drops network signal or get the NO SIMCARD message..
but when i change the mode to AUTO or 3G/CDMA it drops network and gets NO SIM CARD after a few minutes !!
still don't know the reason & still searching
Let's talk about this problem. Mine is similar. Not getting errors with aim card but when i place or receive calls while in wcdma mode, conversation is normal at first place, then after few seconds i can not hear other side, and other side cannot hear me, sometimes that call ends and that is it. On gsm only, calls work normally, but internet is not working, while in wcdma internet works... pretty nasty issue. I tried flashing different roms, tried several modems to flash, problem is not disappearing, but from modem to modem i can see improvements. Sometimes it does not drop at all... can you help me with this?
Related
Hi, I have noticed that a few have already complained about this issue
I'll tell you what happened to me:
I went on holiday from Israel to Jordan for 2 days.
My Kaiser did not roam as my sim wasn't open for Intl. Roaming so it couldn't find a network.
Also I did not charge it so the Battery went dead.
Following that two days I got home gave my Kaiser a full charge and could not get the network back.
I have done many Soft resets, 2 hard resets & spoken to HTC Help Desk.
The only thing HTC could tell me was to send the Kaiser to the UK for repair as they have not heard of this issue before.
Obviously I do not want to send it as I am sure it's not hardware but something else only.
My Kaiser was perched in the US (made in GB)
Network is Cellcom , which by the way I have tried other Sims in me Kaiser since this happened but with no success.
This issue is very frustrating as I feel helpless regarding this issue & I don’t know what to do
If any one has an idea ………….Thanks
Andre'
saper747 said:
This issue is very frustrating as I feel helpless regarding this issue & I don’t know what to do
If any one has an idea ………….Thanks
Andre'
Click to expand...
Click to collapse
First, try just removing the SIM card, then re-inserting it to see if the phone reconfigures itself. You may have to do a power on without sim card, before you re-insert it.
If that fails, do a hard reset so it goes back to factory default settings, then the inserted SIM card should set up the phone settings properly.
G.
Thank, but like I said before……
I have done 2 hard resets tried every way of rebooting with sim / without sim
Nothing works !
Thank, but like I said before……
I have done 2 hard resets tried every way of rebooting with sim / without sim
Nothing works !
hello saper747:
mine switched to flight mode and swap back,it cant find network any more,too,no matter hard-reset or flashing rom,its still.........
looks like we got the same problem, is yours telling "no sevice"? just a "!" on the service icon,right?
Sheng
I think this MIGHT be a bug/issue
I had this last week for almost 4 hours. I dont think the network was down but if it was then T-mobile did not state anything anywhere
I had reception all day and then suddenly around 5:30pm, I lost it and did not get it back until late evening
woohyuksheng said:
hello saper747:
mine switched to flight mode and swap back,it cant find network any more,too,no matter hard-reset or flashing rom,its still.........
looks like we got the same problem, is yours telling "no sevice"? just a "!" on the service icon,right?
Sheng
Click to expand...
Click to collapse
Hi , yes its the same problem
It shows the networks arround but it can't register to them only the !.. icon
This has nothing to do with the network carier as the sim works in all my other phones .
Hi i was wondering if anyone has a solution yet ?
woohyuksheng said:
hello saper747:
mine switched to flight mode and swap back,it cant find network any more,too,no matter hard-reset or flashing rom,its still.........
looks like we got the same problem, is yours telling "no sevice"? just a "!" on the service icon,right?
Sheng
Click to expand...
Click to collapse
I have THE SAME situation. I believe this is the bug which MUST be solved by HTC! Or at least by someone. I still haven't found the solution. Have anybody done??
Has anyone tried what happens when 3G is disabled (GSM mode)?
I'm having the same problem for the last couple of days in the UK with Orange, but when I switch to GSM (Settings->Personal->Phone->Band->Network Type = GSM) it works fine.
alt236 said:
Has anyone tried what happens when 3G is disabled (GSM mode)?
I'm having the same problem for the last couple of days in the UK with Orange, but when I switch to GSM (Settings->Personal->Phone->Band->Network Type = GSM) it works fine.
Click to expand...
Click to collapse
I tried to do that - no result. I have made hard reset - no result. I have dowloaded update WM6.1 from offical site HTC and installed it - no result.
Also, during two days, I calculated at least 20 persons who had this problem around the world. I can not believe that nobody researched this problem yet!
Me 2
I am also suffering from same issue.
My kaiser drop network at around 5PM till 1 hr approx, it hapeend for a week almost then I update radio then it was working ok, but still its not permanent solution.
Now a days my kaiser leaves network anytime and then it will not connect how hard u try, reset, hard boot, flash anything and after sometime suddenly it works.... magic.
I check sim with other phones its working gr8. but with this phone network gives trouble, I dont have 3G here in India, so its running on GSM.
Please somebody find solution, I'll post if I get any solution.
Thanks,
Dilip
Did you try with manual selection of mobile network (start->Settings->Personal->Phone->Band->Network)?
i did the network setting and put it as GSM and it works like a champ
BUT
i lost the 3G capabilities. One of the reason i purchase Kaiser is because the 3G capability.
using other Kaiser will give me a full 3G capabilities so i start wondering whether this is a hardware issue or software
Yesterday I got my brand new Diamond and when I got home the first thing I did was update the ROM from the htc website, everything went ok, I made a call, did some settings and let it to charge, later on I saw that I had No service with the SIM that I had in it originally, I started freaking out of course, rebooted, did soft reset, did hard reset, I even reinstalled the flash to make sure everything went ok. The signal did not work, I mean it got the signal, after 2 seconds loose it, after 1-2 minutes found network again and after 2 seconds loosing it and that was going on. So I tried a SIM card from another network which worked, then I tried a friends SIM from the first network which did not work. Eventually, I selected the network manually on my sim and it started up but only with 2 lines on signal. It seems to be working since last night with 2-3 lines signal but I suspect that could be that we have low 3G coverage over here, anyway.
Has anybody else encountered this problem ? Why do you think this happened? Should I rush into the store to take it back or is it some settings or software?
Also I have the rom from the htc website, is there any other version that works better?
Also could anybody give me a quote on the battery life because I am uncertain of it, I am not pretentious, if it holds up 2-3 days with normal use(phone + a little wi-fi and whatnot) then I am satisfied.
Thank you.
did you take your sim out while you flashed the ROM?
Umm... I must be stupid or something but I didn't, I must say this is not my first phone flashing so I don't know what was in my mind, did I damage the SIM or what ? It seems to work now though...
I've never flashed without taking the sim out, having said that I know people who have flashed with the SIM in and havn''t had a problem. But then there's a few that have had issues when the sim was left in during flash. Good to hear that it's working again.
If I encouter the problem again do you think flashing it without the sim will solve it ?
Also what ROM do you have? Do you recommend one that is better than the one from the HTC website?
What is your battery life average?
well it's hard to know - if you flash again be sure to take out the sim, but if the problem persists maybe you need to get a sim replaced. I work for Telstra here in Australia and a replacement sim costs $30. But if we "say" the sim has "failed" there is no replacement charge.
I am waiting for elite 2.5 rom which is due to be released any moment here:
http://forum.xda-developers.com/showthread.php?t=403296&page=18
My battery life is pretty good - it holds up 2-3 days with normal use (phone + a little wi-fi and whatnot) but if I do alot of browsing I need to charge every day.
I understand, well, what it was strange is that it didn't work with any other SIM I tried from Vodafone network, I tried my friends and another one but worked fine with a sim from another network during that time when I had the problem.
I will keep my eye on it and hope it doesn't happen again.
Do you use Yahoo by any chance on your device? I get the e-mails perfectly with the imap server but I can't get to send any e-mail with the smtp server the phone has configured automaticly...
probably the default settings for yahoo are diff...i think it requires a reg change possibly to fix? not sure....
regarding the flashing...i've flashed my diamond around 7-8 times, not sure...pretty much tried every cooked rom here cept for 1 or 2 and the official WWE ones...never had any issues with flashing (and my sim was inside the phone every one of these times)...
it happend to me
it happend to me, in places with low signal... hapend a lot
what solve it was flasing the radio rom 1.00.25.05 i think it may solve all your ploblems.
please let us know
pd. i had signal problems with al the older radio roms even the 1.00.25.03
thanks jr-daza, i will search for the rom to flash now.
is there a place on the forum where i can download it ?
Last few weeks 2 or 3 I have a problem with GSM reception Phone looses a signal at any place even in outdoor. It could espablish to full straingth in a while and then loose again. I notifyed that enabling the WiFi module makes phone to loose GSM signal every time within 30 sec.
I have tried different radios different ROMs in any combinations. Behaviour is similar every time. Even with original ROM it gets disconnected
Did some one expirienced this before? any solutions?
PS. Before las week in the same enviroment everything was fine.
bangkokru said:
Last few weeks 2 or 3 I have a problem with GSM reception Phone looses a signal at any place even in outdoor. It could espablish to full straingth in a while and then loose again. I notifyed that enabling the WiFi module makes phone to loose GSM signal every time within 30 sec.
I have tried different radios different ROMs in any combinations. Behaviour is similar every time. Even with original ROM it gets disconnected
Did some one expirienced this before? any solutions?
PS. Before las week in the same enviroment everything was fine.
Click to expand...
Click to collapse
Do you have this problem with other SIMs you put in your phone? And if you try your SIM in another phone, does the signal still appear weak?
no advertisement posts pleaz!!
No advertisement posts pleaz!!
advertisement????????
where please show me
fasssst
liamhere said:
where please show me
Click to expand...
Click to collapse
Wow... that advertisement is removed verrry fast!
I am not kidding! There was an advertisement! I'm not crazy I swear!
I'm a plane and I can flyyyyyyy
ooook, back on topic now...
sonnybravo said:
Do you have this problem with other SIMs you put in your phone? And if you try your SIM in another phone, does the signal still appear weak?
Click to expand...
Click to collapse
Nope i did not tried the different one only mine... will try tomorrow
BTW could is be possible that SIM influences the reception?!?
Will rever with results
All suggestions are still welcome
honestly it's a big surprise for me that replacing sim card with a new one have solved the issue.
Thanks for the hint
After a week of reviewing of the behaviour with new SIM i have to admin that it did not help. It still looses the connection as before.
PS: latest ROM/Radio from HTC aplied with no effect
Any other ideas?
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?
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.