How to troubleshoot a missing Personal Hotspot setting in iOS 5

Though much of the troubleshooting attention for the iPhone 4S and iOS 5 has been focused on battery draining issues, another problem has surfaced: users who have activated the Personal Hotspot feature are finding that it is disappearing suddenly.

The solution that seems to be working the best is as follows:

• Open Settings > General

• Scroll to the bottom of the list and tap Reset Network Settings and confirm.

Once your iPhone restarts, Personal Hotspot should reappear in the Settings main page. If this does not solve the issue, try changing the name of your iPhone:

• Open Settings > General > About > Name

• Choose a name with no spaces or other characters.

• Reset your iPhone by holding the Sleep/Wake button and the Home button until the Apple logo appears.

The Personal Hotspot setting may have been set to off during the iOS 5 update. If that was the case:

• Open Settings > General > Network

• Activate Personal Hotspot.

Once turned on, the Personal Hotspot setting should appear in the Settings main page.