Personal hotspot not working 

Hotspot is carrier specific feature --> Contact your Carrier (Cellular Service Provider) The agency who issued the SIM to you

Click --> If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi

Please see the pic below to make it clearer that Hotspot is enabled by a Carrier on one SIM and not by the other Carrier in the same iPhone (Dual SIM).

Use these steps first

Restart the iPhone or iPad that provides Personal Hotspot and the other device that needs to connect to Personal Hotspot. Make sure that you have the latest version of iOS. On the iPhone or iPad that provides Personal Hotspot, go to Settings > General > Reset, then tap Reset Network Settings.

If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi

Also, check the following

1. Network coverage and stability
2. Data Balance
3. On your windows (See if WiFi Auto Joins is enabled)
4. Also, check if you have any stronger WiFi signal around your computer.

Ask the Carrier to change the SIM if nothing works.

This is normally caused by the your cell service company because apple does not supply the hotspot they do. Try force restarting your phone and / or contacting your cellular company.

,zzane

Your cell service may not support personal Hotspot. Check with your carrier.