I have seen several places that say the Android system ICS or newer has a SIP client built in and 3rd party software isn't needed. I have a Moto. Razr M with 4.1.2 I am in the US on the Verizon Network. My phone is stock unrooted. Do I need to be rooted to use this? I have installer Voiper at the moment and like it. But if it is built in why not use it??
Thanks
Thanks