Tips distinguish the original iPhone and iPhone are not genuine

for those of you who do not know how to buy the iPhone so that no one bought, the tips below may be useful, because at this time many in the market is not the original iPhone, or if exactly the same at first glance but in fact it's the iPhone replica
below are some ways to distinguish the original iPhone and iPhone is not original, so you are not wrong to buy the iPhone, (if you have a plan to buy the iPhone).

1. for 2G only. Remember there is no other than the iron back case
2. Check the S / N and IMEI are housed in back case, cross check to that in the boxes
3. Also check in settings>> general>> about
4. IPhone's internal memory only. It means can not be added
5. Before buying, try to borrow the iPhone had a friend, surely will feel the difference if you hold the iPhone replica
6. Motion in the iPhone OS and certainly feel the difference
7. There are laptops + iTunes? Conect, if not detected, make sure no bias in the original.
8. More details see below:

Judging from the condition iPhone
if this one would not be wrong!

The characteristics that are found in ALL iPhone USUALLY FALSE:

*. The screen is not sensitive!
*. Severe LAG!

While other characteristics that clearly differ from the original iPhone (collected from various types CiPhone):

-. The screen does not support 16 million colors, even such a cheap phone or cell phone china in general
-. Home screen there are only 4 lines (3 for applications, one for the dock)
-. There is no labels icon
-. Typeface (font) used a different, larger, bolder
-. Sometimes there are still uses letters / Chinese kanji
-. Weird loading screen,
-. No infrared
-. No radio
-. No TV
-. Dual-sim
-. There are dual OS
-. You Tube icon instead to watch movies with Apple's interface is not really
- etc.