These days the technology has changed a lot and many people want to have there computer anywhere they go ... Blackberry came with the sollutions, they invented mobile phones that do pretty much what a computer does - sending email , internet , msn and loats others.
Also iPhone is a great phone because its offers you the possibility of accesing the internet from anywhere ...
Some good mobile phone are - BlackBerry, Nokia-N95 , N73 , N82 , N81 ,8800 Arthe and many others.
im sure there are places that will send you ringtones and stuff, but im not sure how it works. It might ask for your number, but they might not do anything.what internet history shows up on phone bill?