iOS is the operating system behind the interface of your iPhones, iPod touches and iPads. It is the single most efficient competitor to Google’s open source mobile operating system Android and it has become very popular among Apple fans.
Choosing the best of the new model mobile phones is really difficult. Each model will have their advocates and all have substantially improved on their previous models. Of the three, maybe Windows 8.1 has improved the most with the introduction of Cortana – Microsoft’s answer to Apple’s personal assistant, Siri and Google’s Google now.