What is the main difference between a fake n real a apple iphone 3g 16 gb?

Last weak my friend brought a used apple iphone 3g ( 16 gb ) at rs 4000 ( with only charger ). But nw he's mobile is getting hanged, n sm ppl say that this not a real iphone. So please tell me that how to know whether the iphone is fake or not? P

Real phone will have these all things -

- 3 megapixel camera

- on top you will have - power botton, 3.5 mm jack, sim slot

- metal back cover and not plastic

- if you hold out the phone in bright light / sunlight, then on top left you will be able to see 3 dots, which are the sensors.

A fake won't be able to connect to Apple's App Store, so it only will use the apps and games that it came with - you can't add any other ones made for real iPhones.

There are a lot of other differences but that's probably the easiest one to spot.

Fakes can't & therefore don't run iOS. Only real iPhones run iOS.

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