Ok, so I got a SE P990i to play around with, but it's just been endless trouble. Loosing signal all the time, telling me GPRS/3G is not available, all my incoming calls going to voicemail etc... I decided to try a different SIM card, and all the problems disappear. My original SIM (the one that doesn't work) just says 3G on it. The other SIM is a 32k starter pack, and it works every single time. Most times the phone will not even boot up with the 3G SIM card inserted. Now my issue is this card works perfectly in my i-mate. Any ideas?