Hotspot IPhone Troubletshoot: Disappearing Personal Hotspot For IOS5 Or Higher _TOP_

i updated my phone to ios 5.0.1 and my personal hotspot went missing i retype the access point name in through Internet Tethering settings. and filled in an access point name. And my personal hotspot reappeared thanks for the advice

Hotspot iPhone Troubletshoot: Disappearing Personal Hotspot for iOS5 or Higher