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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.

what's causing slow network speeds?

I'm running the KitKat+ ROM I found in the development section plus faux kernel, I flashed over jellybean and applied fix v2 so I'm getting no problems uninstalling apps or entering security settings. Thing is when I'm at home or even outside I get really slow network speeds of about 0.4 Mbps down,and in settings-aboutphone-status it switches between hspa and hspa+,but down the road about 350 metres at my kids school I get up to 7 Mbps down,I'm just wondering what version of the moto g is this KitKat+ rom based on,I own the UK retail version and was thinking if its based on a us version would it cause problems with connecting to a UK network or have problems with hspa+ in the UK based on what base this ROM is using,just throwing it out there.

Have you tried setting it to GSM auto (PRL) ?
My previous phone (HTC One X+) was running BlackBean rom and was set to CDMA by default, meant that i had to reset to GSM after every reboot.

I have experienced this also on a UK XT1032 running US Global GSM 4.4.2 - Data works but often slowly and stops entirely for periods of time. I had assumed it was the ROM and I'm waiting for the UK 4.4.2 stock firmware image which I expect will solve it. Perhaps unrelated, but I've noticed Opera Mini will not work over 3G in this ROM, but it works fine on Wifi.
EDIT: I was just thinking; that by fastboot flashing the Stock US firmware image, the UK modem firmware may also have been replaced. That could explain the problems. Flashing back the 4.4.2 UK modem firmware might fix it.
My Baseband version:
MSM8626BP_1032.340.63.00R​
Can someone with a US Global GSM XT1032 confirm their Baseband version? Nevermind, confirmed via google. UK Tesco XT1032 running 4.4.2 also has the same Baseband version.
You could try flashing the UK stock 4.4.2 'NON-HLOS.bin' which appears to include the modem firmware. However if I remember correctly, flashing an incorrect radio firmware is one of the few ways to irrecoverably brick a handset.
Safest bet is to wait for the full UK stock 4.4.2 firmware image and fastboot flash that. In future when you flash a different ROM, i.e CM11, you are likely to use CWM/TWRP and the existing UK modem / radio firmware will remain untouched.
If someone wants to correct me on this, please do.

[Q] P3100 can't make or receive calls after official update. What to do?

The provider specific SIM menu is available, but the tablet shows no signal. Even when it shows one, the signal disappears the moment I try to make a call or am about to receive one. The caller can still hear ringing while the tablet lists the call as missed call.
My father's Galaxy Tab 2 7" automatically tried updating through wifi but failed (I presume), and the SIM functions stopped working.
After many attempts I updated it through OTA to the latest firmware, shown as PDA:NA3 / PHONE:LK1 / CSC:NB1 (INU) in Kies, and the Android version was listed as 4.1.2., but the problem persisted.
I tried to wipe cache. It didn't sort the problem.
Then I Installed CWM 6.0.7 and Cyanogenmod 10.1 (JB 4.2.2) using this tutorial: wiki.cyanogenmod.org/w/Install_CM_for_p3100
Still it can't make or receive calls.
Baseband version is listed as p3100ddclk1
What to do?
Is this a hardware or firmware problem?

Hey brother,
Even I am facing the same order on my tab but in a different way. I can recieve signal for the carrier Tata Docomo but other carrier are showing any sign of life
But sometimes while on tata docomo , I lost signals while using data or when I got a call. And one more thing, I was on a trip to a hill station and there I was getting signals from Vodafone perfectly (my main service provider). But when I came back from there I ain't receiving any peice of signals from vodafone and Docomo is working as usual with few network losses during the day.
PS.- I ain't received any solution yet, still sticking up with that problem.
PPS.- The tab I brought is in used condition with the fact that the tab has that problem in it. (I need not to pay much lol)
Btw I think if we can flash new firmware (official) with odin with modem file, It may sokve our problem. TRY FLASHING FIRMWARE, I cant as I am low on speed

xanubhavx said:
Hey brother,
Even I am facing the same order on my tab but in a different way. I can recieve signal for the carrier Tata Docomo but other carrier are showing any sign of life
But sometimes while on tata docomo , I lost signals while using data or when I got a call. And one more thing, I was on a trip to a hill station and there I was getting signals from Vodafone perfectly (my main service provider). But when I came back from there I ain't receiving any peice of signals from vodafone and Docomo is working as usual with few network losses during the day.
PS.- I ain't received any solution yet, still sticking up with that problem.
PPS.- The tab I brought is in used condition with the fact that the tab has that problem in it. (I need not to pay much lol)
Btw I think if we can flash new firmware (official) with odin with modem file, It may sokve our problem. TRY FLASHING FIRMWARE, I cant as I am low on speed
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Click to collapse
@xanubhavx Where can I download the modem file for P3100?

asraf5285 said:
@xanubhavx Where can I download the modem file for P3100?
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Click to collapse
I am not sure about the Model file alone but you can download whole firmware from sammobile.com, they have firmware of all Samsung devices region wise, just login to enjoy better speed.
Hope this helps.

xanubhavx said:
I am not sure about the Model file alone but you can download whole firmware from sammobile.com, they have firmware of all Samsung devices region wise, just login to enjoy better speed.
Hope this helps.
Click to expand...
Click to collapse
i already download the firmware for Malaysia and how to get the modem file from it? Should I extract it and search in?

G920F Weirdness Firmware

Hello,
Just bought a topaz blue unlocked S6. I think it came from an Asian country. The phone arrived perfectly with plastic in box with the same IMEI as phone. However it was rooted with SU. I went into the app and clicked to remove root. It was on 5.0.2. They I tried to flash original firmware with Smart Switch with no success.
I used odin to flash stock 5.1.1 firmware from the UK. The firmware was for 920F. It went all good. I have LTE, SMS and phonecalls. However, sometimes the baseband appears as unknown, but I still can make calls and have LTE. And it still shows the same IMEI as it is on the box and it has always shown it. Is there a way to fix this? Now, I try to flash stock firmware with Smart Switch and it says it can't initialize.
I would REALLY appreciate help. I would love to be able to flash stock firmware from Smart Switch.
I'm in México with Telcel, which uses the same bands as AT&T.
P.S. I really searched and couldn't find anything on my specific situation.

That happened to me when I was still on 5.0.2 and flashed only the 5.1.1 modem. I would suggest downloading the modem.tar file and flash that. Should all be good after that.

I'm currently downloading G920FXXU1AOD4 BTU firmware to flash it with Odin. Might that help me better? My main goal is to be 100% stock without any weirdness. And having Smart Switch recognize my phone!

Well, I'm sad.

calot said:
I'm currently downloading G920FXXU1AOD4 BTU firmware to flash it with Odin. Might that help me better? My main goal is to be 100% stock without any weirdness. And having Smart Switch recognize my phone!
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Click to collapse
You cannot downgrade to 5.0.2 from 5.1.1. Your bootloader will not support. I have the issue with 3G connection. Where to get the Modem.tar?

[G920-F] How to update to Marshmallow

Hi all,
I'm actually using Arter's Back-to-Note with Arter kernel.
The device is an Italian WIND branded one over I flashed first the ITV firmware to get rid of bloatware, then the H3G one for better compatibility with my carrier network and in the end some custom roms.
Now, I'd like to update to Marshmallow but I don't know which version to flash through Odin.
At the moment, I'm thinking about the Italian Vodafone one, the French unbranded one or the Cyprus one.
The main doubts are:
- If I need a particular PIT file to flash these firmware;
-Which is the best firmware to flash?;
-Is possible to downgrade to Lollipop then?

Hi, i'm Italian also, and i have your same phone branded Wind.
- i don't think you need a particular PIT file, because if it was necessarily, Odin had to ask for it when you passed from the branded rom to the ITV one. (i did the same, without the PIT file, and everything went fine).
- if you flash the french one, the SpO2 measuration in SHealth will doesn't work, if you don't use it, you can flash this one or the Vodafone one (i chose these ones because are the most nearly cities)
- i had read that you can downgrade, but i am not sure, i haven't tried it yet. i'm updating to Marshmallow, only because i've tried all but my signal doesn't work, i don't really like the Marshmallow TouchWiz, if the signal it's not gonna start working, i will downgrade