Blackberry even if he had problems lately, remains one of the most popular mobile phone manufacturers, especially among those who love the qwerty keypad. One good detail regarding Blackberry mobile phones is the ability to unlock it for free !
Unlock Your Nokia NoW! A software application that calcualate and give you codes which allows to unlock and use your Nokia mobile cell with any service provider around the world. I never liked the constraints of mobile phone operators, I do not like their subscriptions and especially the fact that they sell a locked phone on their network!