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"
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.
Hello All,
I got a Xperia TL (LT30AT) with original AT&T ICS (4.0.4) on it, I want flash it with JB 4.3 LT30P Rom, according to other threads I need exclude the baseband in order to keep LTE, so quick questions:
1.- Do I need to first flash it with AT&T JB 4.1.2 first in order to have the latest LTE baseband? or is OK to flash it from 4.0.4 to 4.3 with baseband excluded?
2.- Why the we need to exclude the baseband when flashing this phone with LT30p firmware?, as far as I understand the LTE capability is hardware related, if you flash lt30p with lt30at rom you must not gain LTE, so why flashing lt30at with lt30p rom lose LTE option?
Regards!
You answered your own question about the flashing lt30at with a lt30p. So the baseband holds all the drivers/code for the phone.
The best example I can give you is the ps3, sure all the hardware and the boards are the same, but there are slight differences in the chipset, this means that old software from a old ps3 won't work on a new ps3 model, hence a min version downgrade that can be performed.
The same sort of applies here, because of the slight differences in the chipset you can't use a baseband from one on the other.
"To give up is a sign of your weaknesses, but to keep going is a sign of madness"
thanks dude,
but regarding question 1, do JB AT&T hold new baseband version?, or I can go straight to 4.3 from LT30p?
eldarkino said:
thanks dude,
but regarding question 1, do JB AT&T hold new baseband version?, or I can go straight to 4.3 from LT30p?
Click to expand...
Click to collapse
If I were you, I would flash baseband from 9.2.A.0.295 Bell Canada, that is android 4.3
which you can find here http://forum.xda-developers.com/showthread.php?t=2648320
istux said:
If I were you, I would flash baseband from 9.2.A.0.295 Bell Canada, that is android 4.3
which you can find here http://forum.xda-developers.com/showthread.php?t=2648320
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Click to collapse
but LT30a has additional bands that LT30at does not:
4G Network
LT30at - (BC4) 1700 MHz, (BC17) 700 MHz,
LT30a - (BC2) 1900 MHz, (BC4) 1700 MHz, (BC5) 850 MHz, (BC17) 700 MHz
or does not matter?
eldarkino said:
but LT30a has additional bands that LT30at does not:
4G Network
LT30at - (BC4) 1700 MHz, (BC17) 700 MHz,
LT30a - (BC2) 1900 MHz, (BC4) 1700 MHz, (BC5) 850 MHz, (BC17) 700 MHz
or does not matter?
Click to expand...
Click to collapse
Good question, I didn't know that.
LT30at is a different phone technically?
Anyway you can flash 4.1.2 baseband for the moment, I know it works.
Have you seen this thread? http://forum.xda-developers.com/showthread.php?t=2695394
istux said:
Good question, I didn't know that.
LT30at is a different phone technically?
Anyway you can flash 4.1.2 baseband for the moment, I know it works.
Have you seen this thread? http://forum.xda-developers.com/showthread.php?t=2695394
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Click to collapse
Hello dude, thanks for the thread I will follow that guide, and yes LT30at is a unique version released in US only for AT&T specific lte networks,
Also there is a little issue in your firmware compilation thread, lt30at = xperia TL, lt30a = xperia T, you can see the white papers on sony website
Xperia T (LT30p) White Paper
Xperia T (LT30a) White Paper
Xperia TL (LT30at) White Paper
Also you can add the only 2 firmwares that were released to the lt30at to your list they are ATT US branded:
ICS (1264-5716) LT30at_7.0.B.1.152_ATT.zip
JB (1264-5716) LT30at_9.1.F.1.120_ATT.zip, this links were updated by XDA user spectre51
Regards!
eldarkino said:
Hello dude, thanks for the thread I will follow that guide, and yes LT30at is a unique version released in US only for AT&T specific lte networks,
Also there is a little issue in your firmware compilation thread, lt30at = xperia TL, lt30a = xperia T, you can see the white papers on sony website
Xperia T (LT30p) White Paper
Xperia T (LT30a) White Paper
Xperia TL (LT30at) White Paper
Also you can add the only 2 firmwares that were released to the lt30at to your list they are ATT US branded:
ICS (1264-5716) LT30at_7.0.B.1.152_ATT.zip
JB (1264-5716) LT30at_9.1.F.1.120_ATT.zip, this links were updated by XDA user spectre51
Regards!
Click to expand...
Click to collapse
Very good :good:
I will update my list for sure!
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