I've been playing with my T-Mobile 7230 for a few weeks now, and I've been frustrated to find that the phone rings through the small earpiece instead of through the ringer when the earpiece is plugged into the phone. I've missed a few calls because of this. On top of that, the phone seems to forget that I've unplugged the earpiece sometimes, and continues to ring through the internal earpiece instead of the louder ringer. Has any one else encountered this problem and is it fixable?