I was unable to connect another device using personal hotspot

Hello prem2670,

Thank you for using Apple Support Communities!

We understand from your post that you were unable to connect another device using your Personal Hotspot. What type of device are you trying to connect to your Personal Hotspot? Are you able to enable Personal Hotspot on your iPhone? Do you receive an error message? If so, what is the exact message you are receiving? Providing additional details will help us provide you with a solution.

If you are unable to enable Personal Hotspot on your iPhone, this article has steps which may help:

If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi + Cellular) - Apple Support

Best Regards.