iPhone 12 hotspot stuck on 2.4Ghz

Hello SnarkyGoblin092,

For help with your Hotspot we recommend following the steps below and refer to the article titled, If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi + Cellular), for more troubleshooting steps.

"Use these steps first

Try connecting again after each step.

1. Check that Personal Hotspot is turned on in Settings > Personal Hotspot. If you can't find or turn on Personal Hotspot, check that your wireless carrier enabled it and that your wireless plan supports it.
2. Restart the iPhone or iPad that provides Personal Hotspot and the other device that needs to connect to Personal Hotspot. 
3. Make sure that you have the latest version of iOS or iPadOS.
4. On the iPhone or iPad that provides Personal Hotspot, go to Settings > General > Transfer or Reset [Device] > Reset, then tap Reset Network Settings."

Thank you for using Apple Support Communities.

Take care!

Good afternoon SnarkyGoblin092,

Based on the troubleshooting you have already tried, it might be helpful for you to speak directly with Apple about this issue.  

They'll be in the best position to investigate this further.  Click the link below, choose the phone number for your region (or the closest one to it) from the list, and call when it is convenient. 

Contact Apple for support and service - Apple Support

Take care.