I waited before upgrading my iPhone 5 iOS to 8.1, now I wish I never had. LTE shows 3 to 4 bars and yet can't make a connection for data. I've tried cycling LTE is Settings, rebooting the phone and cycling Airplane Mode. Sometimes it works for a short time but them my LTE Data speeds go back to being extremely slow. However, 4G Data is very speedy, just not LTE. LTE used to work just fine prior to upgrading to iOS 8. Why can't Apple get their software fixed BEFORE releasing it?