This is the third bionic that I have had in twelve days, each one had different issues but they all had trouble switching from 4g to 3g. "third times the charm." Wrong!!! This one has more issues than the first two. It only rings right after a battery pull witch I have to do daily. They should have scrapped the phone for a second time and released it in full working order. Bionic is just an x2 with 4g. I'm going back to my charge it was slow but it worked. A better phone will be out by the time its truly fixed anyway.