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HTC One M7 & Samsung Galexy S3 | Migrated from AT&T | NO DATA IN RURAL AREAS

MikeAW2010

Lurker
Apr 6, 2017
1
0
Title explains it all...

I Migrated an HTC One M7 (Rooted and Unlocked) from AT&T along with an Samsung Galexy S3. I did thorough reading on the HTC One and found that the phones are EXACTLY identical between AT&T and T-Mobile with the ONLY difference being the firmware that they use between them so I don't know if its a firmware issue or not but the are both on the GSM network.

Here's whats happening. In my home city, Atlanta. I can get service and 4G almost anywhere in the Metro.. It works almost as if I were with AT&T with the only exception that I got much stronger signals inside of buildings with AT&T for some reason than I do with T-Mobile. When I go about 30 miles out of the metro in ANY DIRECTION though, I lose almost all service. My signal bar turns into an "E". I can't make inbound or outbound calls and I do not get ANY data connectivity. the same thing happens on BOTH phones and when I was with AT&T this didn't happen at all so I don't think the phones are defective.

I have data roaming ENABLED
I am using the following APN's on both phones:
  • epc.tmobile.com
  • fast.t-mobile.com

When I am on a road trip, and I travel fairly frequently.. I can count on not having service through most of the drive, even on major interstates. When I come into small towns sometimes the signal returns and I can browse the internet or make calls for the brief time that I'm passing through them. When I come to ANOTHER major city, here's where things get weird. In some parts of those cities, everything works normally.. in others.. I get phone service only, and in others still..I get no service at all.. like Las Vegas Nevada.. In downtown I got Voice only but no data, had to use WiFi in my hotel. In the Suburbs I got some Voice and Data in some parts and Voice only in others. Same thing for Los Angeles.

Can anyone help me with this? I was "considering" buying a T-Mobile branded phone hoping this would solve the issue but I don't want to do that and get wrapped into a T-Mobile contract on a new device and this doesn't solve it.
 
Hi @MikeAW2010, and welcome to Android Forums!

Solid service in a metro area but weak service in a more rural area sounds like T-Mobile working as expected. Their coverage has improved dramatically in recent years, but I still regularly lose data service within 20 minutes of leaving my town.

Losing service inside a city like Las Vegas is a bit more interesting. Were you indoors by any chance? In many areas, T-Mobile's data service rides on higher frequencies than those used by AT&T, and those high frequencies may not be able to penetrate as far inside a building.

It's possible that loading the T-Mobile baseband firmware could help, but that may be a bit beyond what you're comfortable with.

You may want to check with T-Mobile to see if they can verify where you should have good service or if there are any other suggestions they might be able to make. You may also want to check in the One M7 and Galaxy S3 forums to see if any users have some device-specific ideas to try. :thumbsupdroid:

Good luck!
 
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HTC One M7 (Rooted and Unlocked) from AT&T along with an Samsung Galexy S3.

Losing service inside a city like Las Vegas is a bit more interesting. Were you indoors by any chance? In many areas, T-Mobile's data service rides on higher frequencies than those used by AT&T, and those high frequencies may not be able to penetrate as far inside a building.

Neither phone has the newer T-Mobile Band 12 (700 MHz) which helps with indoor reception. The AT&T S3 doesn't even have Band 2.

I was "considering" buying a T-Mobile branded phone hoping this would solve the issue but I don't want to do that and get wrapped into a T-Mobile contract on a new device and this doesn't solve it.

A newer phone with all the T-Mobile bands (2, 4, 12) might help reception.. Unlocked phones like Moto G5 Plus, Moto Z, Google Pixel, etc. will also work if you don't want to buy from T-Mobile.
 
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