Database Develop

No Signal problem

So, my Xperia Z has "no signal" error when i put my micro SIM card into its slot. Interesting is that when i turn the phone on it asks for a PIN, when i put the correct PIN in and confirm it has no signal at all... in the menu also appear "O2 Sim" apk after few seconds and my phone can even import contacts from SIM :laugh: ... well i am out of ideas.
Things i have tried:
Reinstall Android 4.4 via PC Companion
Downgrade to 4.3 via Flashtool
Downgrade to 4.2.2 via Flashtool
Reboot many times
Took SIM in and out many times + tried SIM in my second phone (XS) it worked normally...
I also tried SIM from different provider - same problem
Changed GSM to WCDMA only, ... (all options)
Add AP point
Find provider Auto/Manually - no service found
Checked if my phone is showing it's IMEI - yes it is
Checked if my phone isn't locked - no its unlocked
My phone is now BT locked, running Android 4.4 (10.5.A.0.230) non-rooted, at first i was thinking its a HW problem but well could it be if it recognizes the SIM card?
Last thing i am thinking about is to change my SIM to USIM, but i am not sure if it will help...
*Edit* I forgot to say everything execpt Network service (calls, sms, data) is working fine. *Edit*
*Edit2* After searching all over the google it seems like i am not alone... i have the same issue like this user https://www.youtube.com/watch?v=WdJ0DREwdEM " *Edit2*
*Edit3* I am adding some screenshots *Edit3*
Screenshots :
http://screenshot.cz/MNYQR/
http://screenshot.cz/Z5ZER/
http://screenshot.cz/QBFUE/
http://screenshot.cz/V7SUL/
http://screenshot.cz/TO741/
http://screenshot.cz/CRH28/
http://screenshot.cz/SQ8QK/
Thanks for any help, answers, ideas, everything.

SĐF said:
So, my Xperia Z has "no signal" error when i put my micro SIM card into its slot. Interesting is that when i turn the phone on it asks for a PIN, when i put the correct PIN in and confirm it has no signal at all... in the menu also appear "O2 Sim" apk after few seconds and my phone can even import contacts from SIM :laugh: ... well i am out of ideas.
Things i have tried:
Reinstall Android 4.4 via PC Companion
Downgrade to 4.3 via Flashtool
Downgrade to 4.2.2 via Flashtool
Reboot many times
Took SIM in and out many times + tried SIM in my second phone (XS) it worked normally...
I also tried SIM from different provider - same problem
Changed GSM to WCDMA only, ... (all options)
Add AP point
Find provider Auto/Manually - no service found
Checked if my phone is showing it's IMEI - yes it is
Checked if my phone isn't locked - no its unlocked
My phone is now BT locked, running Android 4.4 (10.5.A.0.230) non-rooted, at first i was thinking its a HW problem but well could it be if it recognizes the SIM card?
Last thing i am thinking about is to change my SIM to USIM, but i am not sure if it will help...
*Edit* I forgot to say everything execpt Network service (calls, sms, data) is working fine. *Edit*
*Edit2* After searching all over the google it seems like i am not alone... i have the same issue like this user https://www.youtube.com/watch?v=WdJ0DREwdEM " *Edit2*
Thanks for any help, answers, ideas, everything.
Click to expand...
Click to collapse
Try the SIM on other phone, its maybe a problem from your carriar
Xperia™ Z (C6602) with Tapatalk

androidfreak70 said:
Try the SIM on other phone, its maybe a problem from your carriar
Xperia™ Z (C6602) with Tapatalk
Click to expand...
Click to collapse
Thanks for a reply i tried it many times in two different phones... its working with no issue but in my Z nope, it doesn't.

SĐF said:
Thanks for a reply But i tried it many times in two different phone... its working with no issue :/
Click to expand...
Click to collapse
Umm.. You tried another SIM on your phone?
Xperia™ Z (C6602) with Tapatalk

androidfreak70 said:
Umm.. You tried another SIM on your phone?
Xperia™ Z (C6602) with Tapatalk
Click to expand...
Click to collapse
Yes i tried two different SIM cards one from O2 second one from T-Mobile -> same issue, but both are "recognized" i can even open "simcard"apk with info about SIM card but i still have no signal.

I have exactly same Issue as user here https://www.youtube.com/watch?v=dPkdwT6cp_w ... i am really out of ideas

SĐF said:
Yes i tried two different SIM cards one from O2 second one from T-Mobile -> same issue, but both are "recognized" i can even open "simcard"apk with info about SIM card but i still have no signal.
Click to expand...
Click to collapse
Strange..
Try to go to settings >> more... >> mobile networks >> service providers and then select your carrier name and see if works or not
Xperia™ Z (C6602) with Tapatalk

androidfreak70 said:
Strange..
Try to go to settings >> more... >> mobile networks >> service providers and then select your carrier name and see if works or not
Xperia™ Z (C6602) with Tapatalk
Click to expand...
Click to collapse
Not working, check the video i posted before, phone can't find any service provider and i am not able to switch to manual... its reallly strange, i am trying to find some fix or something for about 4 hours + searching google, xda, youtube, ... and what i found? A lot of people with the same issue but no fix ...

After another X hours of looking for issue i found the reason - Antenna Board is probably faulty, i have found the same issue at some iPhone forum when the user had no signal (same as me) and fixed it by changing this little board located at the bottom of phone. But anyway if you know it won't help let me know I will post a reply when new AB will arrive and if change helped.

SĐF said:
After another X hours of looking for issue i found the reason - Antenna Board is probably faulty, i have found the same issue at some iPhone forum when the user had no signal (same as me) and fixed it by changing this little board located at the bottom of phone. But anyway if you know it won't help let me know I will post a reply when new AB will arrive and if change helped.
Click to expand...
Click to collapse
try flashing baseband

i have some problem but at me canot conect to 2G network only in 3G i can stay and i dont have so power signal at 3G at my zone anyone know what to do?

lionboy12 said:
i have some problem but at me canot conect to 2G network only in 3G i can stay and i dont have so power signal at 3G at my zone anyone know what to do?
Click to expand...
Click to collapse
in network mode enable WCDMA(preferred)/GSM

that i have but is not so powerfull signal on 3g and when try to conect in GSM give me that error could't conect to network try to put sim in phone or ......"

androidtweaker1 said:
try flashing baseband
Click to expand...
Click to collapse
Thanks for reply when i flashed .ftfJB 4.3(C6603_10.3.1.A.2.67_CE) and then flashed .ftf kitkat 4.4 (10.5.A.0.230) i think baseband was included or wasn't?

SĐF said:
Thanks for reply when i flashed .ftfJB 4.3(C6603_10.3.1.A.2.67_CE) and then flashed .ftf kitkat 4.4 (10.5.A.0.230) i think baseband was included or wasn't?
Click to expand...
Click to collapse
Did you buy an unlocked phone or is it carrier locked phone?
---------- Post added at 12:54 AM ---------- Previous post was at 12:54 AM ----------
lionboy12 said:
that i have but is not so powerfull signal on 3g and when try to conect in GSM give me that error could't conect to network try to put sim in phone or ......"
Click to expand...
Click to collapse
Try flashing another build of firmware

androidtweaker1 said:
Did you buy an unlocked phone or is it carrier locked phone?
---------- Post added at 12:54 AM ---------- Previous post was at 12:54 AM ----------
Try flashing another build of firmware
Click to expand...
Click to collapse
Unlocked, check screenshots in 1st post - > http://screenshot.cz/SQ8QK/

Could the Baseband be damaged or something? It shows some Baseband version in "About Phone" (not Unknown) ... but i dont know, i hope it isn't.

SĐF said:
Could the Baseband be damaged or something? It shows some Baseband version in "About Phone" (not Unknown) ... but i dont know, i hope it isn't.
Click to expand...
Click to collapse
I don't think there is any issue with the base band
you flashed different builds also
Can be a hardware issue, suggest you to go to a service center

androidtweaker1 said:
I don't think there is any issue with the base band
you flashed different builds also
Can be a hardware issue, suggest you to go to a service center
Click to expand...
Click to collapse
Well i can't go to service center because i lost my warranty... any other solution how to fix it? btw where has Xperia Z located Antenna for GSM ? If it is HW issue like damaged Antenna i can fix it with buying new one but i really need someone to tell me which part of the phone can make this issue to buy the correct new part not whole new phone ...

SĐF said:
Well i can't go to service center because i lost my warranty... any other solution how to fix it? btw where has Xperia Z located Antenna for GSM ? If it is HW issue like damaged Antenna i can fix it with buying new one but i really need someone to tell me which part of the phone can make this issue to buy the correct new part not whole new phone ...
Click to expand...
Click to collapse
Does not mean that the antenna is broken, can be a loose contact also
You are getting the pin prompt because the sim reader is working properly
it is unable to register to network because of antenna issue, better you show it at a mobile shop than doing self diagnosis

i9305 no mobile signal..what else can i try ?

I Have had this i9305 now without mobile signal, with a vodaphone it did used to show signal but in all cases it always says 'no mobile networks' or 'not registered on network' i have tried with every sim i can think of... it was suggested to flash a stock rom which i did..this made no difference, i then tried installing CM11 and followed the guide to the letter.
I know this phone is not blacklisted as i checked with the imei, i have tried flashing different modems but to be honest im not sure what i am flashing to it..i have tried three different ones now starting with XX as i am in uk...i really dont know if i have missed something or doing something drastically wrong..i have read and read and usualy i would have had this resolved by now...can anyone please help me as i want to give this handset to my girlfriend for a present very soon so we can keep in touch..i am at my wits end with it:crying:
Thanks

Try an emergency restore through Samsung Kies - this should eliminate any software related problem. Sounds to be a hardware problem though so get Triangleaway going and send it for repair if that doesn't work.

Flash 4.1.2, then enable and disable the LTE-only mode hack in the hidden service menu (the *#2263# one, not *#*#4636#*#*). (If you have root, you can also access that menu in 4.3 or even the 4.4.2 port, but it's a bit more involved.)
Sent from my GT-I9305 using XDA Free mobile app

Magik_Breezy said:
Try an emergency restore through Samsung Kies - this should eliminate any software related problem. Sounds to be a hardware problem though so get Triangleaway going and send it for repair if that doesn't work.
Click to expand...
Click to collapse
it won't let me do that as it doesn't list the phone as needing an emergency recovery. I flashed a stock rom and the signal is showing but it keeps saying not registered on network.. if I do a search it finds providers but when I opt for the provider of the sim it just perpetually spins at registering on network.
.NetRolller 3D said:
Flash 4.1.2, then enable and disable the LTE-only mode hack in the hidden service menu (the *#2263# one, not *#*#4636#*#*). (If you have root, you can also access that menu in 4.3 or even the 4.4.2 port, but it's a bit more involved.)
Sent from my GT-I9305 using XDA Free mobile app
Click to expand...
Click to collapse
when you say 4.1.2 which rom.. A stock one or a custom.. could you point me please ?.. The stock rom I have flashed is 4.1.3 I didn't flash a radio after as being stock it would be there already ??

Have just followed a guide to root this unit, upon installing root checker it says this device does not have proper root, Odin reports that everything went ok and i get the red pirate android..when the phone boots a pop up comes up saying unfortunatley SU has stopped working... not sure whether KNOX is stopping this ?

no network.
Hellow to you all.
I have got a problem in my s3 LTE.
After installed several rooms my lte not register in WCDMA network.
The mobile phone was from a french network. Bouygues and was unlocked in portugal.
i have got many problems with this phone but i like it very mutch.
the problem that bothers me the most is that i only make and receive calls with full network.
The WCDMA was not working but i allready fix it. Now when i turn to wcdma only it says not register in networck.
the only backup i have from the EFS folder was made by copy- paste and i think the problem was allready there and now i think i had brocken my phone. can you help me???
Excuse my englisb.

967571918 said:
Hellow to you all.
I have got a problem in my s3 LTE.
After installed several rooms my lte not register in WCDMA network.
The mobile phone was from a french network. Bouygues and was unlocked in portugal.
i have got many problems with this phone but i like it very mutch.
the problem that bothers me the most is that i only make and receive calls with full network.
The WCDMA was not working but i allready fix it. Now when i turn to wcdma only it says not register in networck.
the only backup i have from the EFS folder was made by copy- paste and i think the problem was allready there and now i think i had brocken my phone. can you help me???
Excuse my englisb.
Click to expand...
Click to collapse
please start your own thread as it is not relevant to mine.

Someone's suggested this phone is barred.. I have run a check which says it's not blocked but it's been suggested that this is unreliable...I have bars showing but just never registered on network.

Does your IMEI reported in *#06# match the one printed under the battery?
Sent from my GT-I9305 using XDA Free mobile app

hey loady,
did you manage to solve theproblem? i have the same problem since roughly 3 weeks. but honestly, i didnt put much effort in fixing it.
i found a big thread a while ago where the problem is solved... i'll look for it

No internet after TOT & Update

Hi,
I have problem....
Has ZV4 rooted and make SIM unlock with thread http://forum.xda-developers.com/sprint-g4/general/guide-sim-unlock-t3229801
Its work perfect.
And I run ZV5 TOT the update ZV6 OTA, phone didn't has internet (mobile data) anymore.
All wifi, call & sms works OK but no internet with mobile data.
I have already put right APN before, set network GSM/WCDMA/LTE auto,
still not appears LTE or H+ sign / symbol...
So confusing, hope some guys can helped me to solved it...
Thanks & appreciate for that....

adrs168 said:
Hi,
I have problem....
Has ZV4 rooted and make SIM unlock with thread http://forum.xda-developers.com/sprint-g4/general/guide-sim-unlock-t3229801
Its work perfect.
And I run ZV5 TOT the update ZV6 OTA, phone didn't has internet (mobile data) anymore.
All wifi, call & sms works OK but no internet with mobile data.
I have already put right APN before, set network GSM/WCDMA/LTE auto,
still not appears LTE or H+ sign / symbol...
So confusing, hope some guys can helped me to solved it...
Thanks & appreciate for that....
Click to expand...
Click to collapse
It must be apn related.. Try a couple different apns...

Google~Android said:
It must be apn related.. Try a couple different apns...
Click to expand...
Click to collapse
APN was edited same as before when ZV4 its works like champ with LTE.
My problems after upgrade to ZV6 no more internet even with same edited APN.
I dont know whats the problems.
Thanks

Its possible Sprint will locked via OTA to my phone so that any SIM card will not read / detect?
Its weird its all OK included data connection, probably failed to activation (when its ZV6 ) makes Sprint locked my phone via OTA.
Any solution for my problem?
Many thanks

Is it possible Sprint locked my phone (used SIM overseas) when failed activation so that I have no internet?
I've forgotten back up files node.db & node.db-journal ...
Anyone has origins file those from Sprint? (perhaps can fixed my problem)

I have already flash TOT & rooted and wipe reset to factory several times... But still no data connection / mobile data.
Phone can make call & sms but no mobile data.
Whats missing ? Is there loss radio.img or modem.img after factory reset ?
Thanks.

adrs168 said:
I have already flash TOT & rooted and wipe reset to factory several times... But still no data connection / mobile data.
Phone can make call & sms but no mobile data.
Whats missing ? Is there loss radio.img or modem.img after factory reset ?
Thanks.
Click to expand...
Click to collapse
I have the same problem, and I try all methods to resolve this issue like you write, but no luck (

Some tech friend said needed SIM Card from Sprint to take signal and internet will go on.
Be carefull not every SIM card compatible with LG G4.
I am waiting my package arrived from US, I will tell you if works

adrs168 said:
Some tech friend said needed SIM Card from Sprint to take signal and internet will go on.
Be carefull not every SIM card compatible with LG G4.
I am waiting my package arrived from US, I will tell you if works
Click to expand...
Click to collapse
I have SIM carts from Sprint and have powered on phone with it, but sprint have not signal in Ukraine, and I have problem with DATA further( One way what I will try on next weekend - download with Z3X all firmware from ls991 with zv6 and working DATA and upload it to my problem phone. If will be luck - I'll write here

I had the same problem. You need to update your profile. That's it.

tabp0le said:
I had the same problem. You need to update your profile. That's it.
Click to expand...
Click to collapse
Tell me how to update profile ..I am outside US.
Try with this phone not working...always error and not succeed. Many thanks

tabp0le said:
I had the same problem. You need to update your profile. That's it.
Click to expand...
Click to collapse
Tell me friend...
How do update profile.
I live outside of US and didn't have Sprint account.
Thanks

Phone can not register in GSM network even after SIM unlock (QPST Backup needed)

Hello! I need some help with my HTC One M8 Sprint.
Im from Russia, phone work well about 2 years with full gsm network support.
After turn off due batery disharge SIM Locked again. I flash Sense rom and make sim unlock but my phone unable to conect to the my operator network.
I read here that sometimes GSM bands can be reset. I install QPST, made a backup of NVRAM and folow this instruction https://forum.xda-developers.com/sprint-htc-one-m8/general/enabling-3g-umts-countries-t2847461.
After this my phone start to see Russian mobile operators, but can not register on them.
I tried chage my SIM card and tried SIM card of another operator, dont work. Just cant register in network.
I think that in addition to the band something else reset in the radio module firmware.
I put the phone in the service center, but the diagnostic for mechanical damage did not give any results, everything is fine.
I attach all avaible info from DFS app and fastboot and proof that my phone scaning networks, maybe someone can help.
If anyone has a backup of NVRAM, please, chare it with me so i can compare parameters.

OK I will try to help you, I'm currently busy. For now hide the picture with your imei.
BTW which ROM are you using?

Vcek said:
OK I will try to help you, I'm currently busy. For now hide the picture with your imei.
BTW which ROM are you using?
Click to expand...
Click to collapse
Ok, I started from the beginning.
Flash 4.25.651.14 firmware.
Install 4.25.651.14 RUU.
In this tread some guy said that he cannot connect to the network on MM RUU and 4.25.651.14 RUU helped him.
Make Factory Reset in fastboot and radio reset through the command ##786#.
Then I make SIM Unlock with this method.
Intall InserctCoin ROM that figure in instruction and go on. SIM unlocked sucessful and GSM operators became available when scanning.
But still can not connect to the network

I have same the problem any help ???

thaifani said:
I have same the problem any help ???
Click to expand...
Click to collapse
I think this dont just software proplem. I cant fix it for now. I already trying everything.
The maximum result which I managed to achieve - working SMS and sometimes working mobile data. No voice calls.
If I have any info someday - I let you now.

Problem Solved
problem solved
I write NV file in attachment by DFS tool

thaifani said:
problem solved
I write NV file in attachment by DFS tool
Click to expand...
Click to collapse
Dont work for me I try several times.
Connect phone in Diag Mode to DFS, click on Read RF, save my walues, then click on Import, select your file and click on Write RF. Reboot phone and always as the same. After read RF again seems that nothing change.
Maybe I'am doing something wrong? Can you please post your HBOOT and Radio version?
And where did you find that file?
Thanks you for posting that, it restore my hope

No Service/Signal with Android Pie

So I bought my XZ1C in the US, flashed Pie (tried SG, TH, FR) with newflasher/flashtool, since the official US Pie is not out yet, all files except Simlock.ta. All the firmwares showed full signal some time (3~5 minutes, give or take) after boot on, but none of them were able to have data access, and phone calls cannot be made. Xperia Companion doesn't fix anything. Rebooting doesn't fix anything. Same if I take out my sim and replug in, same if I choose WCDMA/GSM or GSM only, same if I reset network settings, and same if I flash the baseband files + OEM.ta from US 47.1.A.16.20. When I go in to the testing (*#*#4636#*#* if I recall correctly), all numbers are 0, indicating no issues with the sim card itself. IMEI is showing up correctly, and the phone even recognizes my carrier. If I rollback to Oreo, everything just works fine, whether it's US, HK, FR, DE, or whatever. It's been really depressing, and I appreciate if anyone could help me out with what is happening here. BTW, my carrier is CTExcel, based on T-Mobile in the US. Thanks.

Does you've try a factory reset after upgrade to Pie?
I

Aki-Zakura said:
I appreciate if anyone could help me out with what is happening here. BTW, my carrier is CTExcel, based on T-Mobile in the US. Thanks.
Click to expand...
Click to collapse
Have you checked the APN settings? maybe your vesrion is failing to download the correct settings.
Look up what they should be for CTExcel, then apply them manually.

mad0701 said:
Does you've try a factory reset after upgrade to Pie?
I
Click to expand...
Click to collapse
Well, I don't think that's necessary cuz I flashed everything using newflasher/flashtool, including reset.

Didgesteve said:
Have you checked the APN settings? maybe your vesrion is failing to download the correct settings.
Look up what they should be for ... , then apply them manually.
Click to expand...
Click to collapse
I'll give it a shot, but I doubt it's because of that. My carrier never required APN settings on iOS or Android Oreo; all it has in APN is something called "alpha" on my iPhone 5s.

I haven't the problem at all. which are reported.... OK... first at all, I have received a loop of reboot during the Sony logo.. After that I press power and Volume up for a few seconds... the phone vibrate some times (normally its means factory reset). After that it was started and I'm at the beginning...

Didgesteve said:
Have you checked the APN settings? maybe your vesrion is failing to download the correct settings.
Look up what they should be for ... , then apply them manually.
Click to expand...
Click to collapse
Ok, I used my home-country SIM card, and enabled roaming, it worked, with AT&T network connected. Changing the APN to my US carrier's didn't solve the problem, however, so I suppose I shall just contact my carrier then. Thanks, bro.