iPhone 4 and iPhone 4S comparison.

Here is the link for comprehensive post about iPhone 4 and iPhone 4S (how to identify model, comparison, etc).

http://www.everymac.com/systems/apple/iphone/iphone-faq/differences-between-iphone-4s-iphone-4.html

How to identify exact model

Model Number which is listed in small type on the back of the phone:

iPhone Model 	        Model Number
iPhone 4 (GSM) 	        A1332
iPhone 4 (CDMA)         A1349
iPhone 4S (Global) 	A1387
iPhone 4S (China) 	A1431

Here is a funny video “iPhone 6 Plus vs 6 vs 5S vs 5C vs 5 vs 4S vs 4 vs 3Gs vs 3G vs 2G Speed Comparison Test”.

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