depends on the service and the phones they offer ---- for me, I have a Treo 650 and I LOVE IT --- if you need a really small phone, then just go to the cell store and ask them to show you the smallest - what I hate about flip phones is that they tend to be way too thick - I think the candy bar ones are fine - however, LG has put out a good bluetooth phone that is pretty tiny - I think its the 325 - check that one out