What to Do If Apple Phones Cannot Connect to Their Own Hotspot or Cannot Find Their Own Hotspot During Network Setup?

The mobile phone hotspot of iPhone 12 and above models is defaulted to the 5G frequency band. When configuring the hotspot, turn on the Maximum Compatibility, and the mobile phone hotspot will change to the 2.4G frequency band. Confirm that the Personal Hotspot and AirDrop remain on.