[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] loserskater:
FAQ/Issues

KNOWN ISSUES:

Aroma might hang during installation. Hold power button until it reboots. It will reboot right back into recovery so don't worry.

Aroma's color might be off sometimes.

The Play/Pause function of "Music controls" does not currently work once the phone goes into deep sleep. Which is about 3 seconds. Need someone skilled with kernel development to give us a hand on this one.

AOSP Mms has a bug that when selecting your own contact in a message thread, it will force close the contacts app

A WiFi calling popup will show when setting up your WiFi for the first time.

Battery Notifications might be a little screwey the first charge. Might have to toggle the setting once you actually have a full charge and the notification, then unplug. If turned off the Notifications should be gone from now on.

Be careful using the volume up key when taking pictures with Best photo. It might cause issues. The on screen button works fine, and the volume key works fine in all other modes.

Tell us if you notice anything else.

GPS:

GPS not locking:

Unfortunately This is going to happen to some when coming from AOSP based ROMs and other carrier ports.

A couple common fixes include...

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1. Easiest and most reliable way. Try this first!

Enter the Samsung service mode by typing this code into the dial pad *#197328640#

Then go to Mainmenu>UMTS>Common>NV REBUILD>NV REBUILD> (Important: don't exit the menu yet!)

Wait 30+ sec

Long press power button and select "Restart / Reboot"

Now check your GPS from any software that may use GPS like "Maps" or "GPS Status"...

All credit to harshaedvern for this easy fix

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2. Returning to the stock ROM via ODIN, acquire a GPS lock then reboot into Recovery.. Wipe and Flash new ROM.

I recommend trying Chainfire's MOBILE ODIN first before the desktop version, it's really easy to use and it's free to XDA users HERE.

You can flash an ODIN package right from your phone and still retain your custom recovery, simply exclude it from the list of partitions to flash.

It will also inject ROOT if the ODIN package does not already have it... makes things really simple.
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3. Restoring a nandroid of a TouchWiz ROM with a known working GPS status, make sure all location services are enables and can obtain a GPS lock. (go to additional steps now if needed) Reboot, Wipe and Flash New ROM...

Additional steps if required before flashing new ROM:

Backup your internal storage and take out your sd-card now... just in case stuff gets deleted. Do a Factory Reset form within the restored TW nandroid. Reboot... Skip all the setup stuff... acquire a GPS lock again... Reboot into recovery Wipe and Flash the new ROM.
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4. Flash back to the AOSP ROM you were just on. Obtain a GPS lock, then reinstall ROM again and see if GPS works

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5. Repeat until one of the options ends up working... Not much else to tell you to try. Good luck!

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GPS and Location Services

: If you have Google Maps installed and Google Now, you will notice Maps uses your location services a lot during the day. Apparently Google thinks we need our location tracked 24/7. Turning GPS on only when needed will help eliminate the wakelocks created by maps. Going a step further you may also want to disable the "Use Network Location", This will also stop other apps form getting your location... Most apps will let you enter your location manually so it's not really a big deal turning it off, especially when your talking about increasing your battery life.