I moved from Nokia to the Samsung C100. It was the worst mistake I have made. The phone does not last more than 2 days. It needs to be charged every night. The battery and signal strengths do not represent the true case; the bar could say you have full signal strength, but actually you have no service at all, the phone even says 'no service'. The menu's are very slow and you will find yourself waiting for the phone to catch up. It turns itself off periodically. The other caller will find your voice muffled and it breaks up. Do not buy this phone.