iPhone 4 has a distinguished complete connectivity. When we are in wifi range, then use high-speed wifi 801.11 b/g/n. If we are not in the hotspot, then the choice is to use the HSDPA network.
With iPhone 4 you can be sure that you can always able to connect to the internet to be able to monitor all email and messenger.
The main disadvantage lies in the inability of iphone 4 is in receive and send files via bluetooth. There are still applications that allow this to happen, but we have to buy it first at store app.
The good news is that we can still listen to music via A2DP. And what about the nature of its USB connection that requires synchronization with a particular device. But with iPhone 4 new ios4 this, we no longer need to lose the music files when synchronized with a different computer devices. There is a backup process which takes place. But, if you want to add music is still a bit troublesome.
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