AT&T says customers facing interoperability issue impacting ability to call non-AT&T users has been resolved
(NEW YORK) -- AT&T has resolved the "interoperability issue between carriers" customers were experiencing on Tuesday, the company said in a statement.Customers began reporting a "nationwide issue that is affecting" their ability to call non-AT&T users, AT&T said at the time.The company later clarified... Read More.
