I recently picked up a one X and found that when I was in an area where the signal(4g) was weak and switched back and forth to 3g it would just stop working at all for connection. I tried a reboot and hard reset. No dice. Then I decided to pull the sim for 15 minutes or so. Done deal. Now it seems to be working like a champ. Hopefully if anyone is having that issue it works for you. Also wanted to agree with many on the forum that the battery seems to get better after a few days. It seems to last as long as my 4s did. And on 4g that seems pretty good. Now if they can just fix this multitask problem.