I have had one of these Nokia 5140i for over 3 years and have found it to be really reliable and very useful when I am out and about. The radio works great and with my headset I jog on with Smooth radio playing in my ear. Have taken it away with me and the one I got I got the EU charger so I could charge my phone whilst I was on holiday. Being unlocked means I can switch services anytime I want and pay as I go, if one service cost are too high I just switch to another operator. Most of my friends have these now, these modern high tech phones mess up too much and have way too many glitches and problems. Stick to the basic I say, a phone!!! Has handy changeable covers which can be very cheaply changed if you don't like the supplied one. I have the black, red and blue covers and everyone thinks I have 3 of them. Getting back to the phones functions, well they are easy to use and some are designed to help you get out of difficulties, the thermometer lets you know when if out working when it's getting little too cold and you may not of noticed, the compass can get you out of a tricky situation by pointing you in the right direction. Has even got voice memo recorder, digital compass, thermometer, decibel meter for measuring sound levels, flashlight, voice control, speakerphone and so many other little in built features - get yourself one, you'll be amazed.