To coin a phrase
The term 'cell-phone' has the opposite connotation than the nature and benefits of a mobile phone it implies that you are stuck, or locked in a place. While that might be true with regard to some of the more onerous service contracts available (i-phone users will understand what I mean) a portable phone offers you a great deal of freedom and, these days, is so much more than a phone. Mine is basic, but, even still, it is my alarm clock and camera. Without the names stored on the SIM card I am high and dry (If I haven't called you for a while it may be because I recently lost my old phone).
So, I have a new expression for my cell-phone: It is a self-phone.
Before you know it I will be customising it with dangly bits and a leopard skin patterned rubber case