[AT&T Samsung Galaxy Note 4] mangakey:
Using AT&T on T-mobile

Using GPS on AT&T on Stock T mobile 5.0.1 Rom is absolutely fine and does not drop off for any amount of time, even 4 hour drives. I did have huge GPS issues on Cyanogenmod - Remix version downloaded here on XDA. The compass would just spin and was inaccurate too. Despite being the latest nightly build as of 5-21-15, I gave up on CM and just went with stock. Been using CM on a note 2 for 28 months before, camera kept crashing. Friends made fun of me for having the app "Camera Restart" just for that. Tried the CM and guess what's the first thing after snapping a few photos? Camera crashes, play store kept crashing, GPS not working, compass would spin and spin with phone on table. No thanks.

Only issue is that I'm not getting the 50 Mbps download others report, i'm merely getting 6 Mbps max DL and 1 max up. Phone probably not provisioned for 4G and will have to call carrier tomorrow. It does show the 4G symbol on status bar despite being so slow. But really 800 kbps is really fast for a cell phone and i'm content. EDIT: now getting 15 Mbps DL and 8 UL as fastest. Usually around 10 Mbps DL and 4.5-8 Mbps UL, which is fast and I'm satisfied.

Touchwiz 2.5 years ago was UGLY, soo ugly, even the dailer. The current iteration looks good. As soon as you change your launcher to Nova, there's less reason to ROM since you can remove all the crapware just by rooting the stock rom. Stability + camera functionality.

Here is a series of steps I took to decrap and root (absolutely needed to decrap).

1. If you bought your phone modded and want to go back to stock, simply download Kies straight from Samsung, and do a reset to stock.

2. step is to get the .tar TWRP Recovery from official site twrp dot me

3. Download Odin from: stockroms dot net under files-tools-odin. I flashed mine on v.1.85 but version 3.10.6 works too from reports. I downloaded Odin from some top result on google and ended up getting one of the most aggressive spyware/adware ever! First time in 15 years I had to reinstall windows because of it. Not sure if there's an official site for Odin but that website is recommended by many and does not have viruses for downloading Odin.

4. Next is downloading SuperSU, this is required to provide the root: Website looks weird but the official website is chainfire.eu because it is the internet pin name of the developer.

5. Then following this video, use the files above to flash: Then search youtube for "How to Root Galaxy Note 4 using CWM/TWRP Method!" The video is old and if you use that guy's website you will be using older version of said software. So use the DL links I posted.

6. Then pick an app of your choice to decrapify your phone. Note that t-mobile's rom is pretty clean already! I personally used Titanium Backup since I already have it. The app allows you to uninstall the t-mobile crapware. Other options include: App Master(Uninstall Master), and Clean Master (Boost & AppLock). Just uninstall anything with the word T-mobile in it and you won't get a text message saying you have some error or something like that. You can seriously uninstall anything with Titanium Backup. Do research on what else you can uninstall without bricking your phone. I just use my intuition but there are people who posted lists on XDA developer. Uninstalling the Amazon app for example will give you an error until you restart your phone. So do at least one hard reboot after uninstalling a ton of stuff. Other

Can't contribute anymore until I play with the phone more and figure things out. Good luck!