iPhone 4S supports GSM and CDMA

The iPhone 4 came in two flavors -- GSM and CDMA -- depending on the carrier. But the iPhone 4S is a world phone, and will work on both networks. This system will benefit people who travel around the world -- and want to switch wireless carriers.Source URL: https://celcells.blogspot.com/2011/10/iphone-4s-supports-gsm-and-cdma.html
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