when my phone is on vibrate, and i revieve a text, my phone lights up but it dosent vibrate and also, sometimes when i recieve a text it dosent go to the bottom of my text messaging list, it goes in the middle, so when i recieve a message, i have to look through all my messages to see which one i just recieved. i've noticed that the time stamp is incorrect on the messages sometimes, which my be the reason...how do i fix these problems???