Cannot connect to Personal Hotspot iOS 7 iPhone 4
Hi. I have updated my iPhone 4 to iOS 7. Before, I have no problem in using Personal Hotspot. But after this upgrade, no one can connect to my Personal Hotspot. In my iPad, it keeps trying to connect to the hotspot for a long long time and cannot connect. In my HTC Android, it keeps on "Obtaining IP Adress". In my PC (USB Tethering), it says that the cable is unplugged.
I have several ways to solve this problem (like turn off - turn on mobile data, turn off - turn on iPhone, reset network setting) but nothing changed.
What can I do in this situation? Thanks in advance.
iPhone 4