How to Distinguish iPhone 4 from iPhone 4S
Do I have an iPhone 4 or iPhone 4S? Some users may don’t know the model of their iPhones, for they may get them as gifts, or bought them from a second hand. Then how do you distinguish iPhone 4 from iPhone 4S? There are some tricks.
Siri for iPhone 4S
The simplest way to tell iPhone 4 from iPhone 4S is that iPhone 4S has the function of Siri, while iPhone 4 doesn’t. So please check your iPhone for Siri first, if you don’t know if it’s iPhone 4 or iPhone 4S. Besides, thanks to its new A5 chip, iPhone 4S is noticeably snappier and faster.
The iPhone 4 GSM will always have a SIM card tray. The sim card tray is located on the right side of the mid-frame. And yes, there is a black line near the bottom, but it’s like that on all of the iPhones.
One slight change in the design would be the placement of the buttons on the left spine. As seen in this picture comparison, the iPhone 4S' mute button and the volume keys are raised just a little bit. It is quite a minute difference. However, protective cases that have these precise button openings for the iPhone 4 may not necessarily fit the newer version.
While there are no huge differences between the two devices. The differences of hardware are still notable as you can see from the following image.
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