Samsung T999 is the galaxy s3 from T-Mobile. It’s a GSM device and it supports a micro-sim card. Specifications and features are similar to any US version of Samsung Galaxy S III. It was released with Android OS, v4.0 ICS and then received upgrades till v4.1.1 (Jelly Bean). If you want a later version of Android on your SGH-T999, you can achieve it by flashing a custom ROM.
Custom ROMs on this page are only intended to work on Samsung SGH-T999. If your device is from another network or if it’s an international version, please use search function to find the post for your device.
PAC-ROM LP Beta-1 Nightly
- Android Version: 5.0.x Lollipop
- Bugs: No Major Bugs
- Last Updated: May, 2015
- Links: http://forum.xda-developers.com/showthread.php?t=2015525
OctOs 5.1.x
- Android Version: 5.1.1 Lollipop
- Bugs: No Major Bugs
- Last Updated: May, 2015
- Links: http://forum.xda-developers.com/galaxy-s3-t-mobile/development/rom-team-octos-oct-l-t3032945
StockMOD ROM 5.3.14 w/ TouchWiz 4.3
- Android Version: 4.3.x Jellybean
- Bugs: No Major Bugs
- Last Updated: August, 2014
- Links: http://forum.xda-developers.com/showthread.php?t=2501303
Wicked X v8.2 w/ TouchWiz
- Android Version: 4.4.2 KitKat
- Bugs: No Major Bugs
- Last Updated: February, 2015
- Links: http://forum.xda-developers.com/showthread.php?t=2750674
CyanogenMod 12.1 for T-Mobile Samsung Galaxy S III
- Android Version: 5.1.1 Lollipop
- Bugs: No Major Bugs
- Last Updated: May, 2015
- Links: http://forum.xda-developers.com/galaxy-s3-t-mobile/development/rom-cyanogenmod-12-t-mobile-samsung-t3055048
LikeWise Galaxy S5 w/ TouchWiz 4.4.2
- Android Version: 4.4.2 KitKat
- Bugs: No Major Bugs
- Last Updated: September, 2014
- Links: http://forum.xda-developers.com/showthread.php?t=2770980
SlimKat (d2tmo) Stable 9.0
- Android Version: 4.4.4 KitKat
- Bugs: No Major Bugs
- Last Updated: December, 2014
- Links: http://forum.xda-developers.com/showthread.php?t=2758215
Liquid Smooth Lollipop 5.0.2
- Android Version: 5.0.2 Lollipop
- Bugs: No Major Bugs
- Last Updated: January, 2015
- Links: http://forum.xda-developers.com/galaxy-s3-t-mobile/development/unofficial-liquid-smooth-lollipop-d2tmo-t3000875
