Has iOS 5.1 turned the iPhone 4S into a 4G device overnight?
by Marguerite Reardon March 9, 2012 12:00 AM PST Follow @maggie_reardon If you're confused by the fact that your newly upgraded iPhone 4S now indicates it's a 4G phone, you're not alone. Ask Maggie explains what's going on and what it means.
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