Which mobile phones support Skype calling?

I would like to use Skype on my mobile phone and require a new mobile phone. I do not know what all phones are capable of using which applications and whether some phones allow you to download any applications. So please suggest me a mobile phone which supports Skype calling.

Near enough all smart phones support Skype application. Its just a matte rof having a data connection on your phone and being able to download the application.
Please be in specific to what kind of phone you would like, the budget and specifications of te phone.