[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.
Galaxy Note 3 T-Mobile
Stock ROM - rooted
Official Jelly Bean 4.3
Note 10.1 (2014)
Stock ROM - Not rooted since KNOX tripping
Official KitKat 4.4.2
Nexus 7 (2013)
Galaxy Note 8.0
Nexus 7 (2012)
AT&T Galaxy Note
AT&T Galaxy S4 Active