T-Mobile Galaxy S 4 Earns Isis and Voicemail Update
T-Mobile today is making a minor system update available to the Samsung Galaxy S 4. The update boosts the device to Android 4.2.2 and makes improvements to the visual voicemail and Isis applications. It can be downloaded over the air or installed via Kies.
Umm,...where is ISIS?...
I did find a contact number though, ...