Everytime i open up the dialer on my x it works fine in the sense of letting me dial a number. However, if i switch to the favorites or contacts tabs at the top my phone will exit out of the dialer back to the home screen. I hope this is something that can be fixed over an update. Btw if i go directly to contacts from the home scrren it works fine. Any help would be appreciated, thanks. A factory reset resolved this issue. Many thanks to NKT!