It could be a number of things. Sprint could be working on that tower or your phone could be switching from one toware to another and then back and so on. Are you having reception issues? Personaly I dont notice this my phone is pretty spot on. I have issues in one spot where I am located and its only in that one spot. Its a garanteed spot lol. When I am laying in bed I alway have the same signal strenth showing aprox -88 give or take about 5dm there either way. If you arnt getting issues with reception then Id say you are just staring at your bars to much. Those those bars are allways being updated with signal strenght. If the towar gets over loaded it could bounce you to another close one there is so many things going on.
ORRRR.. does this only happen when you hold the phone in yor left hand. I heard thats an issue
