Samsung SCH-F309 is a very very useful product. I bought this few like I month ago. It is very very user friendly. I am really happy with this product and I have suggest my younger brother to buy this phone. I am very happy with this and its battery is charged in a very short time. I first found this product in one of my neighbor. I travel a lot and as battery gets discharged faster when mobile is on move, I listen to songs by activating the flash mode.