A:Answer You can WiFi call yes. Group texting is also a yes; even with iPhone users thanks to the stock messaging app being Google Messages - Google Messages uses technology called RCS (Rich Communication Services), it works similarly to iMessages for iPhone users when they message between themselves. RCS breaks Android/iOS barrier and allows you to do group messages, send photos, and even large video files as though you were sending a simple text message. I believe it works with AT&T as well, assuming it's an unlocked device that is not specific to any particular carrier.