I turn the 4g on and it immediately shuts off when it says scanning. It only rarely actually works and this has only been happening the past month or so. I just rooted it with unrevoked3 last week though. the problem has been before that. I do now have wireless tether installed but I don't have it active when I try to update. I've tried it with Wireless tether On and Off, with Mobile Connection On and Off, with Sprint Hotspot On and Off, nothing makes a difference. I've rebooted numerous times. The past few days I've been using Advanced Task Killer to kill apps every 30 minutes in aggressive which gives me crazy good battery life even with syncing and fairly bright light and normal usage. Like three days with only two spots of 30 minute charging. It also charges much faster though. I don't know why it works sometimes. I can't find anything linking the working moments. I'm in a fairly good 4G area when it works, I get around 1.3 megabytes coming down at the peak. Is there anything I can do? Is anyone else experiencing this? I would think that if it actually scanned, it would take longer than an eighth of a second to do so.