Figured everyone needs a more informative customer review so here it goes! This truly is a class leading mobile phone with endless features, the pros include:
+ Amazing retina screen, the quality is superior to anything else on the market
+ Proper iPod in your phone - in my opinion, the best music players out there
+ Superb build quality consisting of metal and glass, although I would 100% invest in a case!
+ One of the best 5MP cameras on the market, it has replaced my dedicated compact camera
+ Great HD video recording
+ A massive, endless selection of apps for literally everything from the Apple App Store - the largest of it's kind in the world
+ Great quality games available, as a comparison the graphical capabilities match dedicated handheld gaming machines
+ Syncs perfectly with iTunes
+ Great virtual keyboard which I can type faster on than with my BlackBerry
On other hand...
- Battery life isn't brilliant, expect to charge every night
- For the price, it's core function is somewhat lacking, signal is mediocre and many other handsets get signal where the iPhone doesn't e.g pubs, cinemas, clubs however this hasn't represented a huge problem for me
- The device is very fragile!
Overall, the iPhone is an expensive device, but it's also very impressive doing whatever you can throw at it with ease. The operating software (iOS) is incredibly intuitive and easy to use and I can honestly say it's the best phone I have ever had. If you are in the market for a top end smart phone, I would thoroughly recommend the iPhone 4.