... refurbished, and fully-tested to look and work like new. The refurbishing process includes functionality testing ... LTE on both CDMA and GSM networks, and a GPS chip. LTE speeds were excellent on the ... 4S (particularly with iOS 7) than it does with the A6.SystemOS : iOS 6.0 ... Apple Store, Siri, Face Time, iCloud, 3G, WIFI, GPS, Bluetooth, Ebook, Email, Messaging,wallpapers, calendar, calculator, clock ...