[Q] 3G Not Working After Flashed SBF - Defy General

Hey guys,
I'm a noob here, sorry that this is in the wrong section.
I recently flashed my phone to the 3.4.3-11 "Froyo" 2.2.1 Android SBF, and lone behold, my 3g stopped working. I've tried factory wipes/resets, reflashing sbf files and nothing seems to work. Any help would be greatly appreciated. Thanks for a great forum guys.
GoldenStateTy

I'm having the same problem!
I flashed the 2.3.4 UK sbf to my device and now 3G will not work!
I'm thinking it's not working because I'm a US customer and the sbf is from the UK but, I'm not sure.
I've also tried calling customer care and had them reset the server my phone is on they said it would take up to 3 days, it's been 10 days, and nothing... still.

Try setting up The correct apn for your network..
Sent from the Nerd Herd using Tapatalk

shibabz03 said:
Try setting up The correct apn for your network..
Sent from the Nerd Herd using Tapatalk
Click to expand...
Click to collapse
You wouldn't happen to have one, would you?

You need to get ' defy baseband switcher' from xda or the market, set it to your region and reboot.
There is still a chance you may need to find the apn's for your region and enter then manually I they will be the same for any android device in your region and on your network, search xda.
When you have set them, get apn backup and restore from the market and back them up so you can just restore when you flash another rom.
Alternately, cm7 includes apn's for every region.

superfastmonkey said:
You need to get ' defy baseband switcher' from xda or the market, set it to your region and reboot.
There is still a chance you may need to find the apn's for your region and enter then manually I they will be the same for any android device in your region and on your network, search xda.
When you have set them, get apn backup and restore from the market and back them up so you can just restore when you flash another rom.
Alternately, cm7 includes apn's for every region.
Click to expand...
Click to collapse
Dangit! Baseband switcher requires root permissions and I haven't been able to root my phone.

Related

[Q] no cell service on cm7

Hi all I have just registered on xda but i'm using it from quite a while.
I'm using htc wildfire bought from my friend fresh from box it was in Era operator currently t-mobile. My operator is Orange. I was using my phone with stock rom for about 10months and decided to root it and flash custom rom. I used guide from this site and after bricking it second attempt was successful. So I was using CM7 installing apps and all over. And now i have really serious problem. My phone tells me there is no service.
What I done trying to repair:
Changing 2g to 3g and back.
Restart
Factory reset from menu
Factory reset from CWM
Battery pull
dialing *#*#4636#*#*
re flashing radio
Installing newer version of CM7
Some of methods seems to work for about 1-3days. But now none of them is working...
Please help
Groofy said:
Some of methods seems to work for about 1-3days. But now none of them is working...
Please help
Click to expand...
Click to collapse
which method seem to work temporarily? What radio do you currently have? Did you try to flash a different radio? (you could find radios here: [REF/GUIDE] [29/07] The Complete Wildfire Index - xda-developers)
eventcom said:
which method seem to work temporarily? What radio do you currently have? Did you try to flash a different radio? (you could find radios here: [REF/GUIDE] [29/07] The Complete Wildfire Index - xda-developers)
Click to expand...
Click to collapse
Ok thanks for really fast reply.
temporarily seem to work factory reset. dialing *#*#... also seemed to work for some time.
My radio is Radio_13.55.55.24H_3.35.20.10 that one was original and i flashed the same version, but I'm not sure if this is the problem.
Now I'm using my old phone so sim card is good.
EDIT:
My wifi is not working. Possible reason: I was playing with reverse tethering and one method via wifi required to put wpa-suplicant or something like that. Maybe this file also corrupted rest of services? GPS works fine...
Groofy said:
Ok thanks for really fast reply.
temporarily seem to work factory reset. dialing *#*#... also seemed to work for some time.
My radio is Radio_13.55.55.24H_3.35.20.10 that one was original and i flashed the same version, but I'm not sure if this is the problem.
Now I'm using my old phone so sim card is good.
EDIT:
My wifi is not working. Possible reason: I was playing with reverse tethering and one method via wifi required to put wpa-suplicant or something like that. Maybe this file also corrupted rest of services? GPS works fine...
Click to expand...
Click to collapse
well, doesn't look to be the radio - but that's just guessing. Did you get those problems directly after rooting and installing CM7 or did it work initially?
eventcom said:
Did you get those problems directly after rooting and installing CM7 or did it work initially?
Click to expand...
Click to collapse
After rooting and installing CM7 everything was perfect that was about 4 months ago. Problems with cell service started when i changed my sim card to surf over internet, and then i used notification bar application 2g/3g to force 3g. And since then I have problems, somewhere i read there could be problem with sim connection. Now i'm using my htc without sim card and when i dial *#*#4636 in gsm disconnects: DATA State DcInactiveState disconnected with last try at 00:59 fail because No Error. And What I noticed when i wanted to change network type in this menu it was returning always to previous state... What is interesting my phone tells me that signal strength is: -79dBm 19asu.
Groofy said:
After rooting and installing CM7 everything was perfect that was about 4 months ago. Problems with cell service started when i changed my sim card to surf over internet, and then i used notification bar application 2g/3g to force 3g. And since then I have problems, somewhere i read there could be problem with sim connection. Now i'm using my htc without sim card and when i dial *#*#4636 in gsm disconnects: DATA State DcInactiveState disconnected with last try at 00:59 fail because No Error. And What I noticed when i wanted to change network type in this menu it was returning always to previous state... What is interesting my phone tells me that signal strength is: -79dBm 19asu.
Click to expand...
Click to collapse
i suggest to carefully check your APN settings and try out the different modes for mobile data (force wcdma might fail in some conditions if I'm correct - check prefer and the other modes, too, if they'll do)
Swyped from my HTC Wildfire (Buzz)
eventcom said:
i suggest to carefully check your APN settings and try out the different modes for mobile data (force wcdma might fail in some conditions if I'm correct - check prefer and the other modes, too, if they'll do)
Swyped from my HTC Wildfire (Buzz)
Click to expand...
Click to collapse
APN settings are correct. I checked them on orange site, on many forums and tried them all. Currently my phone runs wdcma preffered. Now i'm about 20-30m from the transmitter. And still "no cervice". Any other ideas? Somebody told me to install stock rom and then install cm7 on it. But i have no idea how to do it. I can't remember i wrote this before but wifi is working. Sim card is good but i'm using it on nokia 6030. I tried even to put some paper to push harder sim card to better contact and no result.
Hmm, so if you double checked the apn settings and you did activate data in settings/network& wireless and if the SIM seems to be ok it's indeed a good idea to flash a different radio... look at the index thread linked above - all the files and information there. Try the radio that ends with 18.25 (bear in mind to use clockworkmod 2.5.x for flashing).
If that still doesn't work, just flash the current one again to see if that will do (radio problems usually are caused by the missing possibility to wipe or format the radio partition itself).
Crossing fingers
Swyped from my HTC Wildfire (Buzz)
eventcom said:
Hmm, so if you double checked the apn settings and you did activate data in settings/network& wireless and if the SIM seems to be ok it's indeed a good idea to flash a different radio... look at the index thread linked above - all the files and information there. Try the radio that ends with 18.25 (bear in mind to use clockworkmod 2.5.x for flashing).
If that still doesn't work, just flash the current one again to see if that will do (radio problems usually are caused by the missing possibility to wipe or format the radio partition itself).
Crossing fingers
Swyped from my HTC Wildfire (Buzz)
Click to expand...
Click to collapse
Sorry still no result.
Hope you have more ideas...
Have you tried to restore the backup of your stock rom with the new sim?
This may solve the problems associated with Sim Toolkit
If everything works you just have to do a clean install of CM7
is an attempt, but if you do not know what else to do ... (I would try) :silly:
quack75 said:
Have you tried to restore the backup of your stock rom with the new sim?
This may solve the problems associated with Sim Toolkit
If everything works you just have to do a clean install of CM7
is an attempt, but if you do not know what else to do ... (I would try) :silly:
Click to expand...
Click to collapse
Hmm that could work but there is problem... I don't have backup of my stock rom...
New solution
Ok. My friend have htc wildfire on stock ROM. I would like to make copy of his ROM. I know i need to s-off his phone, push revolutionary recovery, and just make backup? If I'm thinking right this would give me zip of his ROM that I can copy to my SD-card and install it like other ROMs?
Thanks in advance for repy.
Groofy said:
Ok. My friend have htc wildfire on stock ROM. I would like to make copy of his ROM. I know i need to s-off his phone, push revolutionary recovery, and just make backup? If I'm thinking right this would give me zip of his ROM that I can copy to my SD-card and install it like other ROMs?
Thanks in advance for repy.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=33351487
If you are s-off then download the first rom in this post, drop it on your sd card and rename it to PC49IMG.zip then boot into hboot and let it update. When your phone boots up again it will be stock but still s-off so you won't need to mess about unlocking everything again.
Sent from my GT-I9100 using Tapatalk 2
Used stock ROM. Installed. Tried all the radios in the meantime and still no signal.
God please say that You have more ideas.
imo it's broken gsm module (antenna). try to flash some other roms, maybe it will work.
PS, widze ze kolega z Polski napisz na priv to sprobujemy cos wymyslic
Wysyłane z mojego HTC Wildfire za pomocą Tapatalk 2

[Q] Can't Connect to Mobile Network after Custom ROM Flash

Hi all, so I'm in quite the predicament. I can't seem to reestablish a mobile connection via Verizon at all since I've overwritten the stock ROM with Cyanogen. I have Inc2, now loaded with CM7, awaiting some help.
First I unlocked the bootloader and flashed CWM Recovery.
Next I flashed Build 4 CM10 http://forum.xda-developers.com/showthread.php?t=1934288 <--check it out here.
I couldn't establish any network connection whatsoever. So i wiped and flashed CM9 with the hopes it would be more stable. http://forum.xda-developers.com/showthread.php?t=1932573 <--again check that one out.
Again, no network connection. Lastly, I reverted to CM7 (because it was the last stable release directly from Cyanogen). http://wiki.cyanogenmod.org/index.php?title=Vivow_Info <--looky here.
I've searched far and wide, trying everything possible. From simply switching on/off airplane mode to manually typing in the Verizon APN. I just can't establish network connection now...and the kicker - I forgot to backup the stock ROM so I'm currently stuck. Please help
This thread may be of some help. Didn't do me much justice however. http://forum.xda-developers.com/showthread.php?t=1691017
Bumping. Somebody please help...Also if anyone has a stock ROM they could share, that'd do fine as well. I'm curious if stock ROM would re-enable the radio (if that's the actual problem).
Sane116 said:
Bumping. Somebody please help...Also if anyone has a stock ROM they could share, that'd do fine as well. I'm curious if stock ROM would re-enable the radio (if that's the actual problem).
Click to expand...
Click to collapse
You don't need to bump a thread after 30 minutes -.-
nitsua98 said:
You don't need to bump a thread after 30 minutes -.-
Click to expand...
Click to collapse
Goes to show how desperate I'm becoming.
Have you tried changing your mobile network? Settings > more> network mode
Been there. You can try different radios from here, but BE CAREFUL. Take the following precautions:
Because you're on Verizon, only download 'x.x.01.xxxx' radios.
After putting the ZIP file on the SD card, verify the MD5 hash to ensure the file didn't get corrupted during download or during transfer to the SD card.
Plug the phone into your charger before installing. You don't want it shutting off during install.
Don't flash the same radio that your phone already has installed.
If all else fails, try the stock 2.3.3 RUU from HTC. If you can find a working download link to that, please share.
Airo18 said:
Have you tried changing your mobile network? Settings > more> network mode
Click to expand...
Click to collapse
I've tried everything in the books. Manually setting my APN according to the Verizon settings. Also did trial and error booting and rebooting each network type to no avail.
A few things I noticed in the CM9 ROM (maybe bugs?):
The preferred network mode typically defaults to GSM/WCDMA upon reboot
The APN I create often disappear upon reboot.
Mobile Networks>Network Operators will either search endlessly or sometimes find both AT&T and T-Mobile as options, both of which won't actually connect as I have a Verizon SIM.
And in response to Slinkwyde:
To verify the MD5 hash, what needs to be done more specifically? (I'm learning as I go ) Did flashing a radio do the fix for you? I'll try this suggestion and post results.
Sane116 said:
I've tried everything in the books. Manually setting my APN according to the Verizon settings. Also did trial and error booting and rebooting each network type to no avail.
A few things I noticed in the CM9 ROM (maybe bugs?):
The preferred network mode typically defaults to GSM/WCDMA upon reboot
The APN I create often disappear upon reboot.
Mobile Networks>Network Operators will either search endlessly or sometimes find both AT&T and T-Mobile as options, both of which won't actually connect as I have a Verizon SIM.
And in response to Slinkwyde:
To verify the MD5 hash, what needs to be done more specifically? (I'm learning as I go ) Did flashing a radio do the fix for you? I'll try this suggestion and post results.
Click to expand...
Click to collapse
Verizon sim? What country are you in, are you using gsm?
Sent from my Incredible 2 using xda app-developers app
jeremytn86 said:
Verizon sim? What country are you in, are you using gsm?
Sent from my Incredible 2 using xda app-developers app
Click to expand...
Click to collapse
Yes, verizon sim card. I'm in the USA. And I believe I am supposed to be using GSM but I don't fully comprehend the differences between each type. However I have tried setting each type in system settings>mobile networks with no data showing at any point.
Sane116 said:
And in response to Slinkwyde:
To verify the MD5 hash, what needs to be done more specifically? (I'm learning as I go ) Did flashing a radio do the fix for you? I'll try this suggestion and post results.
Click to expand...
Click to collapse
Yes, flashing a radio worked for me. The simplest way would be to use an MD5 checker app. Use the app to make sure the file on your SD card matches the MD5 value given in the radio thread I linked to.
One more precaution: Don't ever flash the same radio version that your phone is already using. That caused problems with the original Incredible and might also cause problems with the Incredible 2. To see what radio version you have, go to Settings and look around in About phone, Phone info, or something to that effect. "Baseband" is another word for radio.
Sane116 said:
Yes, verizon sim card. I'm in the USA. And I believe I am supposed to be using GSM but I don't fully comprehend the differences between each type. However I have tried setting each type in system settings>mobile networks with no data showing at any point.
Click to expand...
Click to collapse
Short version: For Verizon, you want CDMA with EvDO.
Longer overview: CDMA vs GSM, and what it means for the Incredible 2
Verizon Wireless and Sprint use CDMA. AT&T and T-Mobile use GSM. CDMA is popular in the United States, but around the world GSM is far more common. All GSM phones use SIM cards, but most CDMA phones don't. The two kinds of CDMA phones that do have SIM cards are world phones (phones with both CDMA and GSM) and LTE phones (faster data speeds).
The Incredible 2 is a world phone (without LTE) and comes with a Vodafone SIM for overseas travel. This Vodafone SIM also has Verizon Wireless branding on it. The Verizon Wireless company is jointly owned by Verizon and Vodafone, a European carrier based in the UK. Verizon world phones have to be unlocked to use AT&T or T-Mobile, because Verizon doesn't want their customers switching to a competitor.
SIM cards make it easy for GSM users (not you) to use their carrier account in another phone. They can just swap the SIM. For CDMA carriers (such as Verizon), swapping service to a different phone requires contacting the carrier.
Sane116 said:
Yes, verizon sim card. I'm in the USA. And I believe I am supposed to be using GSM but I don't fully comprehend the differences between each type. However I have tried setting each type in system settings>mobile networks with no data showing at any point.
Click to expand...
Click to collapse
You don't need the sim card at all then, you're CDMA. If you're not on it already i would recommend flashing the latest ics firmware, it can be found in the ICS leak ROM thread posted by nitsuj17 , it includes the newest radio
Sent from my Incredible 2 using xda app-developers app
Jeremy is referring to this thread: http://forum.xda-developers.com/showthread.php?t=1846304
Note that he's specifically suggesting that you install the ICS firmware. You don't have to install the ROM.
jeremytn86 said:
You don't need the sim card at all then, you're CDMA. If you're not on it already i would recommend flashing the latest ics firmware, it can be found in the ICS leak ROM thread posted by nitsuj17 , it includes the newest radio
Sent from my Incredible 2 using xda app-developers app
Click to expand...
Click to collapse
Slinkwyde said:
Jeremy is referring to this thread: http://forum.xda-developers.com/showthread.php?t=1846304
Note that he's specifically suggesting that you install the ICS firmware. You don't have to install the ROM.
Click to expand...
Click to collapse
Okay so what you both are suggesting are to just install the firmware, assuming I am already running the CM9 ROM? Because the firmware includes the radio. And this is done by renaming the firmware to PG32IMG and flashing it through hboot? Would this be an easier course of action than installing a radio alone? My phone is S-ON and if I'm correct, S-OFF needs to be active to install a radio.
Yes, you can install the firmware to get the radio, and the file name needs to be PG32IMG.zip for hboot. S-OFF is generally required for this sort of thing, yes.
Slinkwyde said:
Yes, you can install the firmware to get the radio, and the file name needs to be PG32IMG.zip for hboot. S-OFF is generally required for this sort of thing, yes.
Click to expand...
Click to collapse
Thanks so much guys, you've been more than helpful. Now to get some work done...I'll post results either tonight or tomorrow once I've finished. Wish me luck!
Put the battery cover back on. It'll instantly drop sig. when not installed.
TA4S
I'm currently trying to downgrade Inc2 so I can S-Off in order to flash either new firmware or radio. I am following this http://forum.xda-developers.com/showthread.php?t=1726134 and cant seem to download the necessary RUU 2.3.3 for Inc2. It seems as if the downloads link is dead. Can anybody link to such a file? I cant seem to find one anywhere.
EDIT: Found a stock (or as close to stock I could find) ROM for INC2 >> http://d-h.st/I2g
Also, I may have a potential reason as to why I'm having this ***** of a problem. I originally unlocked bootloader using the HTCdev tool. At the time it was my understanding that the process did not matter as long as the results were the same. However it seems now that using their tool makes it so you can't flash radios and need to extract and separately flash ROM kernels. So does this mean flashing any of the CM ROM's I tried never included the radio portion?
Just stabbing at ideas. Feel free to verify/call me out.
Sane116 said:
Also, I may have a potential reason as to why I'm having this ***** of a problem. I originally unlocked bootloader using the HTCdev tool. At the time it was my understanding that the process did not matter as long as the results were the same. However it seems now that using their tool makes it so you can't flash radios and need to extract and separately flash ROM kernels. So does this mean flashing any of the CM ROM's I tried never included the radio portion?
Just stabbing at ideas. Feel free to verify/call me out.
Click to expand...
Click to collapse
Roms NEVER include a radio, its always separate. something weird has happened to you, I'm sure flashing new radio would fix it for you but you're dev unlocked which is gay Lol. When you flashed the cyanogen ROMs did you pull kernel and flash like you were supposed to, if not i can't believe you got it to boot but that may be a problem also.
Sent from my Incredible 2 using xda app-developers app
jeremytn86 said:
Roms NEVER include a radio, its always separate. something weird has happened to you, I'm sure flashing new radio would fix it for you but you're dev unlocked which is gay Lol. When you flashed the cyanogen ROMs did you pull kernel and flash like you were supposed to, if not i can't believe you got it to boot but that may be a problem also.
Sent from my Incredible 2 using xda app-developers app
Click to expand...
Click to collapse
If it helps, here is the process that I have used every time I flash anew ROM, working every time (excluding the radio of course.http://www.youtube.com/watch?v=ujFWZbgj6bY
Because I HAD (I actually just reverted back and am currently getting S-OFF to flash a radio) the HTCdev unlock, I manually booted the boot.img after entering recovery and wiping/formatting all the necessary things. Skimming the video might give you a better idea.
However I'm now hoping S-OFF will allow me to reroot, flash CWM, CM9, and of course a radio. Currently in the process of trying to run Revolutionary.

[Q] {PRO} Roaming, no 3G/H data after flashing any ROM

I have a MK16a and have happily unlocked the bootloader and flashed a new kernel over the stock ROM; I have the latest baseband installed.
Any time I try to flash another ROM, I can't get mobile data to work. I show as Roaming, and can connect to GSM but nothing else. APN settings are good. Flashing a different kernel doesn't seem to help either. I tried re-flashing the stock ROM and then a kernel and then the ROM I wanted, didn't work. I tried doing a Factory Reset over the stock ROM that works and flashing another ROM, didn't work. If I restore the backup I made before doing any of this, everything works again - I just can't get any other ROMs to work!
I've searched XDA and other sites pretty extensively and I'm not coming up with anything. Anyone got any ideas?
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Just a note, that all questions should be posted in Q&A section.
Someguyfromhell said:
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Interesting idea. I know the SIM works ok with the carrier-provided ROM on the phone, but it is a fairly old SIM card. Night be worth trying, tahnks for the suggestion!
Someguyfromhell said:
Just a note, that all questions should be posted in Q&A section.
Click to expand...
Click to collapse
*facepalm* Yes, of course they should.
Click to expand...
Click to collapse
Any luck yet?
If still same situation, make sure you are using baseband from MK16a firmware, not MK16i.
If your carrier is so-called virtual network operator, you may need to enable national data roaming in the settings. It's available in the mobile network settings at least in CyanogenMod ROMs.
--Ere
Someguyfromhell said:
If you can, ask operator to change your SIM.
Click to expand...
Click to collapse
Finally got around to doing this! Updating the SIM (which we figured out was probably between 5 to 8 years old) has resolved the issue.

Can't Select Network Operator - HELP

I had my phone working fine on 2.3.6, but I have recently flashed my ROM.
I followed these EXACT instructions (http://www.lorenzobettini.it/2013/08/update-samsung-galaxy-wonder-i8150-to-android-jelly-bean/) and afterwards, I couldn't see Virgin Mobile UK as a Network Operator to connect to. So I can only use WiFi. (However, I saw T-Mobile, Orange, Vodafone and Three. It automatically connected me to T-Mobile, but nothing worked)
I thought it may be a problem with the ROM, so I used the Stable release of this: http://forum.xda-developers.com/showthread.php?t=2120340 ... I have the same problem.
I've now tried a third: http://forum.xda-developers.com/showthread.php?t=2401757 ... still doesn't work.
It can't be the ROMs... Could I need to upgrade my baseband? I don't really know what a baseband is, just what hours of Googling has brought up.
How can I fix this?
WazzleHD said:
I had my phone working fine on 2.3.6, but I have recently flashed my ROM.
I followed these EXACT instructions (http://www.lorenzobettini.it/2013/08/update-samsung-galaxy-wonder-i8150-to-android-jelly-bean/) and afterwards, I couldn't see Virgin Mobile UK as a Network Operator to connect to. So I can only use WiFi. (However, I saw T-Mobile, Orange, Vodafone and Three. It automatically connected me to T-Mobile, but nothing worked)
I thought it may be a problem with the ROM, so I used the Stable release of this: http://forum.xda-developers.com/showthread.php?t=2120340 ... I have the same problem.
I've now tried a third: http://forum.xda-developers.com/showthread.php?t=2401757 ... still doesn't work.
It can't be the ROMs... Could I need to upgrade my baseband? I don't really know what a baseband is, just what hours of Googling has brought up.
How can I fix this?
Click to expand...
Click to collapse
try changing ur baseband/ modem with the one intended for ur country/ region.
dec0der said:
try changing ur baseband/ modem with the one intended for ur country/ region.
Click to expand...
Click to collapse
okay, if this goes wrong, can i restore from my backup on CWM and it'll be fine? also, where ís a tutorial for this?
no need to change operator
Virgin media pay T-mobile/EE to use their network all you got to do i change the apn on your phone manually to get your data and you will be fine
i know this becase i have been doing for the last few months and had no problems
spawnofdonny said:
Virgin media pay T-mobile/EE to use their network all you got to do i change the apn on your phone manually to get your data and you will be fine
i know this becase i have been doing for the last few months and had no problems
Click to expand...
Click to collapse
Okay, will flash a new ROM and will try now.
EDIT: It didn't work for me...
EDIT2: Got it working, used a different APN... Thank you SO much, you're a life saver!

[Q] 4G Lost After Flashing Firmware

Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
I'll try the two options
Thanks guys for the responses.
First I'll try to flask UK ROM to see if finally I get kitkat working on my phone. If this doesn't work I'll take the second option with PC Companion to restore the original ROM. I'll post the results.
It seems this rom doesn't work for me
GuizmoPhil said:
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
Click to expand...
Click to collapse
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Y2j-Hotaru said:
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Click to expand...
Click to collapse
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
not able to download original rom
jewelkobayashi said:
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
Click to expand...
Click to collapse
Hi jewelkobayashi,
I tried the method you wrote, but, despite the phone being disconnected, it downloaded the same ROM that I recently have flashed (GLOBAL .757 commercial and Journalist). Is there any other way to download the original Phone ROM . I know my original ROM is GLOBAL-14.2.A.1.114 and the customization number is 1281-3723. I haven't found any site to download this exact firmware. If you know something, it would be very appreciated. Thanks in advance.
Are you sure about your customization number? Because it gets changed if you flash another firmware. Here's everything you need to know: http://forum.xda-developers.com/showthread.php?p=52011642 to download your firmware. By the way, what's your country, branding and SI-Number (so I can add your customization number to the list)?
Y2j-Hotaru said:
Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Click to expand...
Click to collapse
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Finally it worked
Rekoil said:
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Click to expand...
Click to collapse
Thanks for your response. I verified APN settings with friend's phones and it was identical. Finally I called my carrier's help desk and after some try/error setups with them, they gave me an alternate APN that worked until I came home where 4G icon dissapeared again. Then, I was surprised with helpdesk response when I called them again. "There is no 4G coverage in your home area". O.O What is intriging to me is that the phone displayed 4G all the time when I just bought it (Even with restarts and wherever i was) and this changed only when I flashed a generic rom. Is just a silly assumption, but, is possible that carriers can make things like force 4G icon in their custom roms to make advertising or something like that? Just asking. Anyway, Thanks a lot for the responses.
crohit911 said:
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Emmm do you have a manual to how to use the ussd??
I went into it to check it out, I touched I don't know what...
And now I can no longer connect to my network provider...
(reboot doens't helps, changing to wdmca or gsm or other options doesn't changes, VPN seems ok, I have no signal... )
Help!!!
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
emilic said:
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
Click to expand...
Click to collapse
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
crohit911 said:
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Actually, there's an app in Google Play that is a shortcut to this ussd code : 4G LTE SWITCH

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