The Issue:

My signal switches between H+, 3G, E, and rarely G. All while being in the same spot. It spends 90% of the time on E.

This happens in areas of great reception, indoors and out.

Rarely will H+ happen and 3G is very sporadic too.

What I've tried:

Before doing any modding of my phone, I previously backed up my EFS/IMEI with Andromizer (XDA link). Restoring it hasn't changed anything.

Changing network modes (LTE/WCDMA, LTE/GSM/WCDMA, GSM/WDCMA preferred)

Enabling/disenabling data roaming

Changing APN settings (The choices were T-Mobile US and T-Mobile US LTE)

TL;DR:

MY ATT I747 ON TMOBILE WONT KEEP THE H+ OR 3G SIGNAL AND IT SUCKS AND MAKES ME WANT TO CRY. PLZ HELP PLZ PLZ PLZ

I have an unlocked AT&T i747 on T-mobile's $30 100 min unlimited text, and 5GB 4G data plan.I live in the heart of a major city (Boston) where T-mobile is prepping LTE so I can get their 3G/4G on the refarmed 1900MHz and without AWS.My IMEIlisted in the status section.So would flashing Tmobile radios help? Tmobile/d2tmo ROMs?Seriously though, any help would be appreciated. Thanks everyone! If you need anymore info Just let me know.