Accelerometer

64GB iPhone 4S Factory Unlocked. Will never lock. SIM free version. Now you can use your voice to use your iPhone. Just talk to Siri as you would to a person: Do I need an umbrella? or Any great burgers around here? or Where's the closest ATM? Siri not only understands what you say, it knows what you mean.1 It figures out the right apps to use to find the right answer. Then, just like a personal assistant, it answers you. Siri makes phone calls, sends messages, schedules meetings, sets reminders, and more. How much more? Just ask, and Siri tells you that, too. Two cores in the A5 chip deliver up to two times more power and up to seven times faster graphics.2 And you'll feel the effects. Fast. iPhone 4S is quick and responsive, which makes all the difference when you're launching apps,... Less