AT&T Adds Wi-Fi Support to Its Enhanced PTT Service
But is it secure? And how about a head-to-head comparo?
BTW Phonescoop, what about having a head-to-head comparison of PTT performance & features from Sprint, AT&T and Verizon, with Nextel as the baseline to compare all three of the newbies to? Including when an AT&T EPTT customer has no LTE signal and it drops back to 3G signal, same for Sprint & Verizon, how does each perform when in...
My guess is you don't miss regular or PTT calls with AT...