My missing Wi-Fi Personal Hotspot (iOS 5)

So, I updated my iPhone 4 to iOS 5.0.1.

Then I just realized that my Personal Hotspot was missing. I’m not sure if it is iOS 5 bugs or not, but my friend said that I probably could have it back with doing this Reset Network Settings. I tried, but it didn’t bring me any luck. I still had this:

• No “Personal Hotspot” feature on Settings.
• No “Personal Hotspot” feature on Network.

Anyway, I finally managed to have it back. Here’s how.

1. Go to Settings > General > Network > Cellular Data Network.
2. Scroll down and find “Internet Tethering”. Enter the information: APN, Username and Password. (I use Indosat, so I just put “indosatgprs” on APN and leave the Username and Password blank)
3. Restart iPhone.
4. Go to Settings > General > Network > (and now I can see) Personal Hotspot.
5. Activate Personal Hotspot.

Voila!