AT&T and Verizon customers found themselves unable to call contacts on other carriers for several hours on June 4. Based on people's reports on ...

Photo: Pau Barrena / AFP (Getty Images)AT&T customers across the U.S. are reporting major network issues on Tuesday that’s stopping them from making ...

AT&T has supported RCS messaging on Android phones . But if you , the experience hasn’t always been great, with interoperability between different ...