I phone, the word that every one knw about it very well,
M also using iphone sinc 2-3 years,
Its start with iphone 3gs, iphone 4 and now 4s,
Its a great product that I have ever seen, its totally diffrent from android phones, it run on ISO that gives you a positive point that is iphone never get hanked, it loaded with some advance technology like I cloud, iclod helps to secured your personal data when your phon was theft, its locks the phone automatically after 10 tyms enterd worng password, .