The high competition between big smartphone producers made them upgrade their devices more often than before in order to stay at the top. Four mobile OS monsters – Apple, Android, Windows and Blackberry – are at war with each other, and all of them have chances to win.
Apple’s iPhone has always been famous for its hardware and software completing each other, which positions this device as a very special one on the market. For instance, it was a big surprise for everyone that iPhone had no physical keyboard. But it was even a bigger surprise for the whole world that this seemingly irreplaceable part was so successfully replaced by the software. On the other hand, visual voicemail was received with great enthusiasm right away. Talking about more recent updates there were some new features of iOS 5 and iCloud project.



