
iOS 4.1 features: Field test mode
Field test mode, missing from iOS 4.0, makes its triumphant return in iOS 4.1. If you're not familiar with it, field test mode is a diagnostic mode that shows cell reception as actual, meaningful numbers as opposed to nebulous Apple and carrier rendered bars. To enter field test mode, dial 3001#12345# To exit field test mode, click the home button If you're playing around with it,...