A couple days ago i noticed my phone was silent, which is pretty unusual. I decided to check and see if i had any messages, hit the power button, and saw no little message icon waiting for me. I figured no one had texted me so i moved on. About a half hour later i checked again only this time went in to the messages app thingie and had three unread messages, all of which had come up within the last thirty minutes. Ive been checking it more often now and it does vibrate, but the little icon doesnt stay up long/at all. Any idea what im doing wrong? Its getting kinda annoying not knowing if i have a message or something.