[Q] AT&T S4 Active - use T-Mobile and want Wi-Fi calling
As the subject stated, I have AT&T version of the Galaxy S4 Active. The phone is unlocked (code provided by AT&T) and now I have a T-Mobile SIM card.
I want to do Wi-Fi calling, but couldn't find any information in this forum or when Googling it.
Can anyone provide step-by-step information on this? Preferably, I don't want to install a custom ROM - I use stock ROM (rooted) and it has been stable so far.
Google Nexus 5 4G LTE
Stock ROM - rooted
Official Jelly Bean 4.4.2
Nexus 7 (2013)
Stock[/B] ROM - rooted
Official Jelly Bean 4.3
Galaxy Note 8.0
Google Nexus 7 Tablet - Official Google JellyBean 4.2
AT&T Galaxy Note with 4G LTE - Official AT&T Ice Cream Sandwich 4.0.4
AT&T Galaxy S4 Active with 4G LTE - Official AT&T Jelly Bean 4.2