What's the difference if the iPhone 4 and 4s?

What's the difference if the iPhone 4 and 4s?

Well some people may say the iPhone 4s works faster or has a better camera, but the main difference is Siri.

IPhone 4s has "Siri"

That's really the only difference I know of. I've had the 4 for 2 1/2 years now and still works great! I don't care to have Siri anyways.

There's lot difference, there's difference in the processor, as well as camera 4s is 8mp, and 4 support 4 mp

IPhone 4S has better camera, iSiri and upgraded IOS versions. For more differences go to http://www.phonearena.com/phones/compare/Apple-iPhone-4, Apple-iPhone-4S/phones/4586, 5257 or http://www.gsmarena.com/...hone2=3275

The external appearance of 4S seems identical to iPhone 4.
Difference between iPhone 4S and iPhone 4
iPhone 4 is the predecessor of iPhone 4S. Both devices have similar outlook and available in both black and white. IPhone 4S runs on a powerful Dual core A5 processor while iPhone 4 runs on a 1 GHz ARM Cortex-A8 processor. Apple iPhone 4 is available in 16GB and 32GB in terms of storage. IPhone 4S is available in 16GB, 32GB and 64GB versions in-terms of storage.

Http://www.gsmarena.com/compare.php3?idPhone1=3275&idPhone2=4212
See for yourself.