What Apple iPhone have that iPod Touch doesn't? Possible Duplicate:
  Any other major difference between iPhone and iPod Touch except telephone function?  




Short answer: Touch is not a cell-phone.

I'm looking for long answer because I don't really get why iPhone is like 2x more expensive than Touch?

P.S. I'm comparing iPhone 32 GiB (4th generation) with iPod Touch 32 GiB (4th generation). Newest models with the same capacity of memory.
Well, some of the costs come from the GSM components that the iPhone has, others come from the production process, which is different.

Then there is the amount of RAM is 512 MB for iPhone and 256 MB for the iPod Touch. Also, the iPhone has a compass. The rear cameras are different - 5 Megapixel camera for the iPhone and 0,7 Megapixel for the iPod.