People say M phones are not user friendly, but they are wrong. I have been using this E398 for 2 years plus. It's so easy to use.But now I just had my first problem. Whenever I press the Message key, the whole phone gets frozen! I have to switch off and switch it on again to get it working. Can somebody tell me if it is Software or Hardware problem and if it is worth repairing it or just reformatting it.By the way how do i reformat it anyway?