Bought this a year ago when I was looking for a cheap replacement phone to replace one that had fallen apart on me. It's designed for easy access for your SIM card, and it does the job well, pop off the cover, and slip it in or out (a snug fit but easy to remove if you want to). A serious pro is that you don't have to reset the clock from taking out the battery in the SIM replacement process.
Admittedly, it's not a polyphonic ringtone, 5 giga pixel cameraphone with all the bells and whistles, but honestly, not everybody wants those things, and it covers for the lack of these things with it's small size and negligible cost.
It's small, sturdy, and it does your calls and texts.
And one last thing: When somebody sees me texting with it, their faces: priceless.
"That can't possibly be a phone!"
Yes it is, Damned good one too.