My laptop computer cannot see my iPhone5's Wi-Fi Hotspot

Hi all,

I have an issue with the wireless teethering for my iPhone 5.

I have enabled the Wi-Fi HotSpot and my laptop computer cannot see the wireless AP after several attempts, even after I rebooted it.

Nonetheless, iPhone 4 and iPad2 can see that wireless AP and use it without a problem.

And, I can use the USB teethering with my laptop computer without a problem.

Finally, after I rebooted my iPhone 5, my laptop computer can see the wireless AP and use it to connect to the Internet.

It hasn't happened before with iOS5 on my iPhone 4s.

Is there anyway to avoid this or fix this without a reboot? This is quite annoying to reboot my phone.

Thanks