reverse proximity sensor. on two different iphone 4 now. the proximity does what its supposed to do going to dark. but when im ready to hang up it stays dark and will not light back up, i have to push the home button or volume buttons to make it light up to push end. it has to be some cydia app, proximity works fine on the stock version and it works jailbroken, but somewhere in installing a cydia app it conflicts with the sensor. i can fix it by restoring and starting over and testing after each download, however im wanting to find out if there is a faster way than to spend two hours restoring and putting apps back on ?