One of the best companies when it comes to providing security updates.
Smart MANAGER! Not messenger! That thing is the perfect replacement for the useless bloat-packed Clean Master and CM Security. Available since 5.0.1 for most devices except those from carriers that said no to it.
AnonD-625621, 07 Mar 2017what is rcs ?RCS = Rich Communication Services. It would have been nice if GSMArena took the time to actually decode the acronym.
Anyhow, if you search Wikipedia for Rich Communication Services there is an article about it.