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Flashed Phone, now data isn't working

I flashed my Xperia T (LT30P) today to a firmware version of ICS 4.0.4 after updating software the other day (5/31) to jellybean 4.1.2 Now, my phone isn't picking up data nor showing up as 4G LTE. The firmware I used was 7.0.A.1.303 Vodafone. I have tried a factory restore with no success. I live in America and the firmware was UK if that makes a difference. I visited at&t today to resolve the issue. They told me that the network is functioning fine and tried my sim card in a different phone, which worked fine. So, is there anything I can do? Thanks in advance for helping.

It does make a difference if you used UK firmware on an American phone. Since the UK communicates on a different frequency than the US, the two are not compatible. The only option would most likely be to reflash your phone using a different ROM, or flash it back to stock.

Problems with mobile data s6 duos

Hi there,
Recently, I've been having mobile data problems with my s6 duos
I've got an s6 duos from globe, so 1 sim slot is locked to globe and the other sim slot is open line. Recently I've been having problems connecting to mobile data using my smart sim card. In the data service network, the option to choose smart for mobile data is locked/unavailable, so I can only use my globe simcard for mobile data. I've tried using a different sim but no luck.
I was able to use my smart sim for mobile data in the past. Though I have no problem receiving texts or calls with my smart sim
Advice is much appreciated
Thanks
Also, in APN under my smart sim, I get this message
"Unable to view the access point name settings. Access is restricted for the current user profile."
i64.tinypic.com/2i1kprd.png

My guess... flash BTU ... latest UK g920F firmware. Its kind of imposible to lock 1 sim and the 2nd sim to be unlocked.
Edit: you may lost warranty after this... and this is only my guess.
Edit2: flash a costom recovery... do a full backup so if something goes wrong you restore everything

lummujaj said:
My guess... flash BTU ... latest UK g920F firmware. Its kind of imposible to lock 1 sim and the 2nd sim to be unlocked.
Edit: you may lost warranty after this... and this is only my guess.
Edit2: flash a costom recovery... do a full backup so if something goes wrong you restore everything
Click to expand...
Click to collapse
Thanks for replying! I've never really done something like that before.. so if you could give me links and let me know what are the risks of flashing?
also my unit was purchased locally in the philippines, will a uk firmware work with it?

In settings search "profile" if the cell phone finds any ,post a screenshot of if... and you find firmware at samfirmware.com... or a guy have posted them in general section uploaded in google drive for better speed download

lummujaj said:
In settings search "profile" if the cell phone finds any ,post a screenshot of if... and you find firmware at samfirmware.com... or a guy have posted them in general section uploaded in google drive for better speed download
Click to expand...
Click to collapse
Thanks!
No results when i searched profile in the settings.
Will trying flashing a new firmware

Am curious, will unlocking my phone also solve the problem?

LanceD. said:
Am curious, will unlocking my phone also solve the problem?
Click to expand...
Click to collapse
I had the g920FD... the phone use one EFS for both imeis. I said it cannot be 1 sim lock and 1 seem free. The phone for sure contain something installed from provaider to restrict the sim1. I would flash new version. But as i said 1st ill flash recovery to do full nandroid backup

Can't connect to any cellular network anymore SM-G920F

Hello, I can't connect to my local mobile network anymore.
So I can't call or receive phone calls.
I am in Latvia, Baltic region.
My imei is legit and working, so is my phone number.
When I search for my mobile network it finds it -LV TELE2, easy, but when I attempt to connect to it, it shows it 'can't connect to this network try later', when of course the network is working properly for other phones., and it is the network that worked before.
I happened after I flashed a custom lineage rom. It was the right rom for my device,
and I flashed it in correct order and all worked except mobile networks.
I thought using odin to flash back the stock rom will fix it, but it didn't.
Now I am back to stock 7.0 , flashed csc SEB version for my region.
Now in mobile networks there is only Lte/2g/3g options, why there is no gsm or vcdma mobile service?
I believe my provider is gsm, so how to restore it so I could call again?
It shows no service in the drawer, and can't connect to my carrier.
Any help is greatly appreciated, thank you ^_^)/

Had same problem after my motherboard was changed in some mobile repair shop and old imei and stuff copied from old motherboard. After flashing stock 7.0 with ODIN, I had same problem. Luckily repair guy added some certs back free of charge. Something to do with not being official Samsung repair place and not having right kind of tool.
Sent from my SM-G920F using XDA-Developers Legacy app

Thank you for your info. Then it must be possible to fix it with the right tools even at home! I am sure there must be someone who knows how to do it and can help me, and many others with the same problem.

When you tap *#0011# imei status is OK or NG?

Hello, I typed *#0011# and yes imei status is ok, more info - rat=gsm (2g), band=pgsm900 and reg status is = not registered.
So this couldn't be an imei problem, could it?
During this time, I tried many roms, nougat and marshmallow, official and custom, but none has fixed it yet.
I was thinking, flashing original galaxy s6 lollipop rom will definitely do the trick,
because I remember I had a similar problem with my old galaxy s plus phone,
it was impossible to connect to any mobile network on any rom,
until I flashed the oldest stock rom for the device.
But the problem is, I can't find a working download for a custom lollipop rom, they are extinct it seems,
and the official lollipop rom can't be flashed with odin, obviously, because I have a higher fw already.
Official lollipop would be the best and would show if the problem is software related for once and for all,
but how to install it when knox and all kinds of binaries doesn't allow me to flash it with odin?
Is there another way to do it?

No need for this anymore, never solved the issue.
I sold the phone.
Thanks anyways ^-^)/

Problem after HEROLTE TWRP and THE GALAXY PROJECT ROM

I am facing a problem. I was experimenting with THE GALAXY PROJECT rom. I turned on developer options and removed oem unlock.I installed twrp for hero lte and did format partition instead of wipe and installed the galaxy project rom. It worked fine but then I revereted to my stock firmware with ODIN. I noticed that I am not able to call any one. I thought i had installed England Firmware on Indian firmware as I faced that problem, so I downloaded the indian firmware again but again it was working on england firmware. I can say this because it was using upday instead of samsung briefing. I thought its a wrong rom again and to atleast make calls installed herolte rom. Same problem. Call ends immediately. My sim works fine in another phone. Any other sim stops calling in my phone.
Can any one suggest a solution of what might have happened.
I just booted into recovery and it mentions there herolte recovery.
Any solution.
Post Note - Rom were fine. Only calling and sending sms is not working. I can receive a text and can use internet over LTE. System cannot read sim phone number in hardware diagnostic. I cannot open aditional setting in phone as it says that error reading sim card.

rajputz said:
I am facing a problem. I was experimenting with THE GALAXY PROJECT rom. I turned on developer options and removed oem unlock.I installed twrp for hero lte and did format partition instead of wipe and installed the galaxy project rom. It worked fine but then I revereted to my stock firmware with ODIN. I noticed that I am not able to call any one. I thought i had installed England Firmware on Indian firmware as I faced that problem, so I downloaded the indian firmware again but again it was working on england firmware. I can say this because it was using upday instead of samsung briefing. I thought its a wrong rom again and to atleast make calls installed herolte rom. Same problem. Call ends immediately. My sim works fine in another phone. Any other sim stops calling in my phone.
Can any one suggest a solution of what might have happened.
I just booted into recovery and it mentions there herolte recovery.
Any solution.
Post Note - Rom were fine. Only calling and sending sms is not working. I can receive a text and can use internet over LTE. System cannot read sim phone number in hardware diagnostic. I cannot open aditional setting in phone as it says that error reading sim card.
Click to expand...
Click to collapse
Reinstall original England rom using Odin. And then install twrp and again install TGP or any other OREO rom you like.
Don't forget to format data after installing tgp for the first time.
Also boot up and reboot once after clean flashing with Odin.
Then flash twrp.
P.S try flashing csc selection by tkkg it may help.
Also which rom are you using nougat or oreo?

I have used Oreo as well as nougat. Problem persists.
Only my current operator aim are not working and rest of the sim are working fine. Service center haa asked me to get motherboard changed.
I was installing indian rom. Now even samsung knox related apps are not working.
So basically you want me to install tgp again and twrp after that and again went back to stock after that.
Do you have any idea why this problem could have been causes. Can rooting mess with physical hardware of phone?

njaya95 said:
Reinstall original England rom using Odin. And then install twrp and again install TGP or any other OREO rom you like.
Don't forget to format data after installing tgp for the first time.
Also boot up and reboot once after clean flashing with Odin.
Then flash twrp.
P.S try flashing csc selection by tkkg it may help.
Also which rom are you using nougat or oreo?
Click to expand...
Click to collapse
I want to go back to stock without twrp and my current network working. Its an indian version phone.

rajputz said:
I want to go back to stock without twrp and my current network working. Its an indian version phone.
Click to expand...
Click to collapse
Okay then phone and SMS probably won't work, cause I guess the Indian version is still a nougat but the England one in oreo both your modem and firmware would have been updated and it's not possible to go back, so I suggest you stay with TGP for a while until official oreo arrives in India.
Or else don't use phone or messaging ?

Wrong carrier apps S7 Oreo

Hello peeps, i have installed the latest firmware for the SM-G930F from Belgium (G930FXXS3ERL4_G930FVFG3ERJF_PRO) but somehow the carrier apps from vodafone get installed when booting into the system even though the Proximus app should be installed... I have tried to reinstall it multiple time and still have the same outcome? had this problem with my S6 Edge in the past too but i fixed it somehow (I didn't fix it but it fixed itself tho XD)

VoidedKN0X said:
Hello peeps, i have installed the latest firmware for the SM-G930F from Belgium (G930FXXS3ERL4_G930FVFG3ERJF_PRO) but somehow the carrier apps from vodafone get installed when booting into the system even though the Proximus app should be installed... I have tried to reinstall it multiple time and still have the same outcome? had this problem with my S6 Edge in the past too but i fixed it somehow (I didn't fix it but it fixed itself tho XD)
Click to expand...
Click to collapse
There is only one reason this happens, the firmware is not an unbranded international version.
Complete waste of time messing about with Belgian, French,German version etc just Download the BTU firmware from sammobile or direct from Samsung. It's says United Kingdom but it's basically western Europe unbranded.

cooltt said:
There is only one reason this happens, the firmware is not an unbranded international version.
Complete waste of time messing about with Belgian, French,German version etc just Download the BTU firmware from sammobile or direct from Samsung. It's says United Kingdom but it's basically western Europe unbranded.
Click to expand...
Click to collapse
So if i download and install the BTU version what will be different rom the belgian software? Like i remember with my s4 i used to install BTU firmware all the time because there wasn't one for belgium, but didn't notice anything different with my sim card... so i hope this will be the same that i still have the functionallity like i had before i flashed custom roms

VoidedKN0X said:
So if i download and install the BTU version what will be different rom the belgian software? Like i remember with my s4 i used to install BTU firmware all the time because there wasn't one for belgium, but didn't notice anything different with my sim card... so i hope this will be the same that i still have the functionallity like i had before i flashed custom roms
Click to expand...
Click to collapse
The BTU stock holds all the csc codes, base bands, network functions for all of the European region which means once it connects to the network in your country, it automatically detects which system files to use so you "don't notice anything different" than if you had installed country specific like Belgian.
There is always one stock which hold everything for a region, in Europe its the UK unbranded, generic, international, BTU version. It works everywhere in Europe.

okay so i've installed the btu version and it worked just fine, except it was a little slower and idk why. but when i tried to use mobile networks it wouldn't work so i checked my apn settings and my provider wasn't in there so i had to add it manually wich for me turned into an even slower experience on my phone... I really don't know what i did wrong or what happend, so is it possible to get a detailed instruction to flash the stock oreo rom? and also a how to for rooting stock oreo with magisk? because my guess would be that something went wrong when rooting

VoidedKN0X said:
okay so i've installed the btu version and it worked just fine, except it was a little slower and idk why. but when i tried to use mobile networks it wouldn't work so i checked my apn settings and my provider wasn't in there so i had to add it manually wich for me turned into an even slower experience on my phone... I really don't know what i did wrong or what happend, so is it possible to get a detailed instruction to flash the stock oreo rom? and also a how to for rooting stock oreo with magisk? because my guess would be that something went wrong when rooting
Click to expand...
Click to collapse
Hello well unfortunately Belgium isn't important enough country to have your own unbranded stock firmware.
APN settings should install automatically when you connect to mobile network in your country.
There is a specific guide to follow to root S7 on Oreo, please google and follow it exactly.
Also BTU is a stock Oreo ROM.