U.S. iPhone users have joked that Apple's gadget can do everything but make phone calls. The problem is partly due to congestion on AT&T's wireless network. Now in some cities, including Tucson, AT&T ...

I was a happy AT&T customer last week–for about an hour. Now, it’s back to frustration and anger. [ See CIO.com’s recent article, My AT&T Customer Service Nightmare. ] I spent $150 on a product called ...

Everybody knows that using cellphones indoors can be a mixed bag: you might get lots of signal strength outside (standing in the rain) but once you step inside (where it might be, say, warm and dry) ...