is anyone else having issues with the signal on the phone jumping sometimes or not as strong as itshould be? since i got my one X today ive noticed the signal bouncing, going from 4 bars to 1 bar , up to 3 then 4.. and doing the same things every so often.. i was out with the wife earlier and she had 5 bars on her iphone 4 and i had 3 on my one x.. she consistantly has 1-2 more bars than i do and any given time.. and i have already gotten a new sim.. wondering if i was the lucky guy that got a dud or if other people are seeing lower signal strength on their X