Hi. For some reason, sometimes when people ring me they get my answerphone straight away. This has happened on quite a few occasions when I know I haven't been on the phone and have full signal. It will also hang up as soon as I go to answer it sometimes (when it rings), then won't let me dial out for a bit. Anyone else had any problems or know whats causing this? Could it be because I'm on the Internet at the time, or maybe because my sim is like 4 years old? Thanks in advance, Carl.