AT&T provides GSM coverage across much of the USA and has roaming agreements in the majority of countries that have GSM coverage. AT&T also offers service and apps for iOS, iPad as well as iPhone.
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Can I use an iPhone 4 on Straight Talk?
I have an iPhone 4 that's currently on AT&T. My 2-year contract will be fulfilled in January, and at that point (if possible) I'd like to switch my service to Straight Talk or some other less ...
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Why does AT&T claim I used more data than my iPhone does?
I reset my data usage in Settings (iPhone 4s) at the start of every billing cycle. Every month I near my data limit of 2GB so it's important to me to be careful of this number. However it seems like ...
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“Voicemail Unavailable” on iPhone 5
I recently switched from an iPhone 4 to an iPhone 5 (both on AT&T). I keep getting a popup in the phone app that says "Voicemail unavailable. Unable to initiate connection." I am still getting ...
