[Q] How to change the radio band? - Sony Xperia T, TL, TX, V

Hi to all.
I have a Sony Xperia T (LT30p).
I've downloaded the LTE Setting app and changed the Radio Band to USA Band in settings by a mistake.:crying:
The phone can't find any network anymore.
Is there a way to fix this problem?
Thanks in advance

ales_x1 said:
Hi to all.
I have a Sony Xperia T (LT30p).
I've downloaded the LTE Setting app and changed the Radio Band to USA Band in settings by a mistake.:crying:
The phone can't find any network anymore.
Is there a way to fix this problem?
Thanks in advance
Click to expand...
Click to collapse
flash a stock ftf for your phone and exclude everything except baseband. That will put you back on stock

flash a stock ftf for your phone and exclude everything except baseband. That will put you back on stock"

Related

Xperia T LT30a Bell Mobility

Hey guys, was wondering if anyone on here happens to have an Xperia T LT30a on the Bell mobility LTE network?
if so, would some one be able to make a ftf file of there stock ROM, and upload it or if anyone knows of a link to download the stock firmware for the bell version (I made the mistake of not making my own ROM when I first got the phone, sense flashing a custom ROM I have lost my LTE ability)
Robe8691 said:
Hey guys, was wondering if anyone on here happens to have an Xperia T LT30a on the Bell mobility LTE network?
if so, would some one be able to make a ftf file of there stock ROM, and upload it or if anyone knows of a link to download the stock firmware for the bell version (I made the mistake of not making my own ROM when I first got the phone, sense flashing a custom ROM I have lost my LTE ability)
Click to expand...
Click to collapse
I have the LT30a Bell model, and I have yet to find a working .ftf for it. I accidentally flashed mine to an LT30p build, and it's overheating the device severely. Need some help
ishJJx3 said:
I have the LT30a Bell model, and I have yet to find a working .ftf for it. I accidentally flashed mine to an LT30p build, and it's overheating the device severely. Need some help
Click to expand...
Click to collapse
just repair your phone using pccompanion, that willtake it back to stock, factory settings
gregbradley said:
just repair your phone using pccompanion, that willtake it back to stock, factory settings
Click to expand...
Click to collapse
hey i'm new to the xperia community, how about would you be able to restore to factory without a stock rom?
thanks in advance

[Q] loss of gsm signal

Hi guys, please I need some help with my xperia z, it presently does not get any network regardless of changing sim. Dis occurred few days after upgrading to newest firmware .67. It worked fine after some days but signal started gettin poorer.realised dat after givin the phone a little bump it comes back to full signal.eventually it stopped getting network altogether, except in rare cases when I feel I'm close to a tower , it searches but cannot register on the network sayin to ensure that a network signal is in range 99asu.I also cannot switch to manual select of network. Please anybody with a solution. Want to know if its a hardware or software problem. I don't have a sony service centre here that can help me.thanks
I had a similar issue and found that my "APN" was missing (Telcel Mexico). I created a new APN from information on the Internet and all is well.
Sent from my C6602 using XDA Premium 4 mobile app
gwithrow said:
I had a similar issue and found that my "APN" was missing (Telcel Mexico). I created a new APN from information on the Internet and all is well.
Sent from my C6602 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
i doubt if its a similar issue. i dont get any signal at all
my brother it seems that the device is faulty... get it RMA'd
rohit25 said:
my brother it seems that the device is faulty... get it RMA'd
Click to expand...
Click to collapse
Pls what do you mean by RAM'd?
mibz said:
Hi guys, please I need some help with my xperia z, it presently does not get any network regardless of changing sim. Dis occurred few days after upgrading to newest firmware .67. It worked fine after some days but signal started gettin poorer.realised dat after givin the phone a little bump it comes back to full signal.eventually it stopped getting network altogether, except in rare cases when I feel I'm close to a tower , it searches but cannot register on the network sayin to ensure that a network signal is in range 99asu.I also cannot switch to manual select of network. Please anybody with a solution. Want to know if its a hardware or software problem. I don't have a sony service centre here that can help me.thanks
Click to expand...
Click to collapse
What model do you have??
You upgraded by PC Companion or by flashtool?? Maybe the baseband is incorrect and the phone don't have signal, maybe your carrier use two band and not both are in all coverage.
yamiAMR said:
What model do you have??
You upgraded by PC Companion or by flashtool?? Maybe the baseband is incorrect and the phone don't have signal, maybe your carrier use two band and not both are in all coverage.
Click to expand...
Click to collapse
Initially upgraded to .434 using flashtool, then .67 by OTA. By baseband do u mean 2g and 3g? Cos I don't get any form of signal at all.
Hi there, I have had the same problem: after updating the XZ to 4.2.2 (2.67 over OTA) the signal dropped instantly. Therefore I had to send it back Sony Care. They fixed it. The update has overwritten a different smallband/baseband-version above the other one, just as I suspected. I bet you can flash it yourself (your an XDA user..) instead of waiting 2 weeks or more. If you don't know how it works and you've absolutely no experience with flashing, just send it back to Sony care.
I think the easiest way is to flash a different (older) baseband-version on your XZ, reboot/factory reset and see if it works. The second method is to try downgrading the software to .244 INCLUDING the baseband-version, then update it by flashing the XZ to 2.67 while EXCLUDING the baseband-version. The third option is to re-flash (with flashtool) the 2.67 update but a different version (GLOBAL).
My phone details:
Modelnumber: C6603
Android-version: 4.2.2
Smallbandversion: 9x15A-ACEFWMAZQ-30110068-44
Kernelversion: 3.4.0g43a9ba9
Buildnumber: 10.3.1.A.2.67
Altough your smallband/baseband may differ from mine. Therefore, please find your own software-version. I'm using:
GLOBAL-LTE_10.3.1.A.2.67 (Netherlands)
Goodluck! Please let us know about your issue:fingers-crossed:.
mibz said:
Initially upgraded to .434 using flashtool, then .67 by OTA. By baseband do u mean 2g and 3g? Cos I don't get any form of signal at all.
Click to expand...
Click to collapse
But what Xperia Z model do you have?? C6603, C6602, C6606??
I have a similar situation in the case of C6603, in my carrier sometimes I have 2G signal but never 3G and other times no signal. In the case of OTA or PC Companion updates, sometimes upgrade to diferent model or carrier, I have a friend that upgrade his Xperia Arc by PC Companion but with the uncarrier firmware. Maybe this is your case, the OTA firmware don't well upgrade your base band.
In this case I suppose that you can flash only the baseband by Flashtool, but be carreful that the firmware was made for your Xperia Z (C6603, C6602, C6606).
yamiAMR said:
But what Xperia Z model do you have?? C6603, C6602, C6606??
I have a similar situation in the case of C6603, in my carrier sometimes I have 2G signal but never 3G and other times no signal. In the case of OTA or PC Companion updates, sometimes upgrade to diferent model or carrier, I have a friend that upgrade his Xperia Arc by PC Companion but with the uncarrier firmware. Maybe this is your case, the OTA firmware don't well upgrade your base band.
In this case I suppose that you can flash only the baseband by Flashtool, but be carreful that the firmware was made for your Xperia Z (C6603, C6602, C6606).
Click to expand...
Click to collapse
ok thanks i use a c6602
tally114 said:
Hi there, I have had the same problem: after updating the XZ to 4.2.2 (2.67 over OTA) the signal dropped instantly. Therefore I had to send it back Sony Care. They fixed it. The update has overwritten a different smallband/baseband-version above the other one, just as I suspected. I bet you can flash it yourself (your an XDA user..) instead of waiting 2 weeks or more. If you don't know how it works and you've absolutely no experience with flashing, just send it back to Sony care.
I think the easiest way is to flash a different (older) baseband-version on your XZ, reboot/factory reset and see if it works. The second method is to try downgrading the software to .244 INCLUDING the baseband-version, then update it by flashing the XZ to 2.67 while EXCLUDING the baseband-version. The third option is to re-flash (with flashtool) the 2.67 update but a different version (GLOBAL).
My phone details:
Modelnumber: C6603
Android-version: 4.2.2
Smallbandversion: 9x15A-ACEFWMAZQ-30110068-44
Kernelversion: 3.4.0g43a9ba9
Buildnumber: 10.3.1.A.2.67
Altough your smallband/baseband may differ from mine. Therefore, please find your own software-version. I'm using:
GLOBAL-LTE_10.3.1.A.2.67 (Netherlands)
Goodluck! Please let us know about your issue:fingers-crossed:.
Click to expand...
Click to collapse
thanks a lot, i'l try what u suggested, i know how to flash but dunno how i can do that without the baseband like u said, cos i already did a factory reset .i use a c6602 guess il find a version here that i can use.i'l hola at you if i hit any roadblocks cos i dont have esony care here.thanks a lot
mibz said:
ok thanks i use a c6602
Click to expand...
Click to collapse
Look this: C6602 10.3.1.A.2.67 STOCK
If you have doubts and I can help you tell me.
To find your version, just dial *#*#7378423#*#* => service info => software info => File system version: ......; download it from Xda and (re-)flash it. I've read about this; it happens a lot with XZ's with the GLOBAL firmware. You've probably the same version. Good luck and please let us know
tally114 said:
To find your version, just dial *#*#7378423#*#* => service info => software info => File system version: ......; download it from Xda and (re-)flash it. I've read about this; it happens a lot with XZ's with the GLOBAL firmware. You've probably the same version. Good luck and please let us know
Click to expand...
Click to collapse
hi, i jst re flashed with the 2.67 version the other guy posted in this thread, and its still not working, no network signal at all (0 dbm 99 asu), i realised i have the same baseband and kernel version with yours although i use a c6602. its global_hspa though.what do you think i should do next please. thanks
mibz said:
hi, i jst re flashed with the 2.67 version the other guy posted in this thread, and its still not working, no network signal at all (0 dbm 99 asu), i realised i have the same baseband and kernel version with yours although i use a c6602. its global_hspa though.what do you think i should do next please. thanks
Click to expand...
Click to collapse
Try to flash full firmware, because you don't have signal at all, maybe could be hardware issue. Cultural question, You try your sim card in another phone, don't you?
Okay I eventually found out what the problem was.it's a hardware problem, connection of the antenna near the vibrator, bottom right when lookin at back of phone was loose.thanks to all who posted suggestions.eventually opened it myself.

[Q] Xperia ZR C5503 Android 4.3 update LTE selection in mobile networks gone

Hi guys! So I updated my phone using the PC companion to the latest android 4.3 made available here in the middleast region and I'm wondering how come my LTE selection is gone from the mobile networks selection. Anybody else having the problem? I'd also like to know is anybody tried flashing a different Rom region firmware and fixed the bug. Thanks in advance!:fingers-crossed:
ignaciopaolo33 said:
Hi guys! So I updated my phone using the PC companion to the latest android 4.3 made available here in the middleast region and I'm wondering how come my LTE selection is gone from the mobile networks selection. Anybody else having the problem? I'd also like to know is anybody tried flashing a different Rom region firmware and fixed the bug. Thanks in advance!:fingers-crossed:
Click to expand...
Click to collapse
I don`t have this problem, but i didn`t update via pc companion , i flashed the new 4.3 FTF with flashtool ..anyway if your phone is branded and/or you don`t have 4G on your carier you may not have LTE on network selection .. Sorry for my english ..
Yeah thanks! I downloaded the nordic rom for my c5503 and then flashed it. Happy to see that the LTE connection choice is back. Must be a c5502 software that was realeased for the middleeast version. Thanks anyway!
Sent from my C5503 using xda app-developers app

Problem with 3g and band operator?

Hey guys, i need help please!!!!!
I´ve changed of cell operator ,and now my 3g doesn´t work with android 4.3, but when i came back to android 4.2.2, it does. I have a xperia Z C6603
I think that i have a problem with baseband, because the company use 1900 band , and , i don't have that baseband.
maybe the 4.2.2 version have that band?
Are there a way to integrated that band on my smartphone with android 4.3 because i need that version , i dont want the old one , please
The C6603 definitely has the GSM 1900 band whichever firmware you're using. I'm on an unbranded 4.3 firmware and I have it.
To check, enter *#*#7378423#*#* in the dialler, then look in Service info - Configuration.
I would check your APN settings if you haven't already, or try downloading them through Settings - Wireless and networks - Internet settings.
Sent from my C6603 using Tapatalk

Xperia SP c5302 : tinkering with *#4636 results in loss of network

HI
I have an xperia SP C5302, running on the factory version of 4.1 (No custom ROM, not yet updated)
I recently wanted to check if my phone has LTE support using *#*#4636#*#*, there i did find an option called LTE only in the network, i had a 4G sim inserted as well, but neither 3G nor 4G was coming on that phone , it was in EDGE for Idea bengaluru.
Note: I always use DOCOMO and i do get H+ signals(3G) in it.
Coming to my current problems, after changing and selecting couple of network (LTE/WCMA/EvDO/GSM, etc) and also playing with the "Change Band Settings"---Selecting USA BAND(the only one shown in the option) and performing a restart, my phone is unable to catch a signal at all.No network is being shown, even a manual network search initiation fails .I tried selecting "GSM only" as well..but no help:crying::crying: Please help me to restore my phone guys....)
C5302 does not support LTE. You may need to flash the stock ROM again to fix this issue. Since you're stock, use Xperia Companion for this matter
I have the same issue mmm my c5302 has 207 firmware
iaxperia said:
I have the same issue mmm my c5302 has 207 firmware
Click to expand...
Click to collapse
Try this fix:
http://forum.xda-developers.com/showthread.php?t=2865378
Sent from my Xperia SP using Tapatalk
Pretty much what the guys said. Xperia Companion repair is the easiest method if you are newbie

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