Personal Hotspot not working in iPhone 13/12 Pro Max, XS and iPAD on iOS 15 [Fixed]

With release of new Apple software, many users are having issues with iOS 15 personal hotspot. This issue seems to be linked  to iOS 15 only as not such issue was reported with iOS 14/iPhone 12.  The hotspot turns On fine but other devices are unable to connect to iPhone 13 hotspot or in some cases after updating to iOS 15 iPhone hotspot not starting properly. 

When you start hotspot from the iPhone it seems to be started but cannot be searched by other devices like phones or laptop. Even for some time you can see the iPhone Wi-Fi signal in the laptop but when you select the network to link your other device you will observe sudden WIFI signal disappearing from the list and  laptop wont connect to iPhone hotspot.

Can't connect to personal hotspot from iPhone after iOS 15 seems to be an intermittent issue as it seems that this will work sometimes but after sometimes the hotspot will stop working. Very likely the issue of iphone personal hotspot not showing up is a software glitch of iphone and can’t be linked to  a hardware issue. There does not seems to be any statement issued from Apple that why iphone 13/12 Pro hotspot not working sometimes.

How to fix iOS 15 hotspot not working  in iPhone 13 Pro , iPhone 12 XR/7/6s Plus:

Fix 1: Change Password/Hot spot Name

To fix Hotspot not working in iOS 15, iPhone 13 , try changing the password WIFI password worked, you should also try to see if it helps.
Or You can try to changes hotspot name and restart the data connection. To change the name of iPhone Hotspot Goto settings->General->About->change name of your iPhone.

*Make sure to turn off/on data connection and personal hotspot after doing these changes this should fix iPhone Hotspot not visible in other devices like laptop or mac devices.

Fix 2: Toggle Facetime

Got to Settings > FaceTime and scroll down to the bottom.

Toggle Use Cellular Data to off (or on)

Turn your phone off. This is important as otherwise this solution does not work.

Turn the phone back on.

Go to Settings > General > Cellular > Personal Hotspot and switch it on.

Check that Personal Hotspot now appears in Settings beneath WiFi and Bluetooth.

Fix 3: Reset Network Settings

Tap Settings.

Tap General.

Scroll all the way to the bottom and tap Reset.

Tap Reset Network Settings.

In the pop-up warning, tap Reset Network Settings.

Your iPhone will restart. When it's done booting up, check the main Settings screen for the Personal Hotspot option.

Fix 4: Logout and login to iCloud

In case you are not able to connect to iPhone hotspot try logging out of iCloud on the device that is my personal hotspot fixed the issue for me as well. This should fix personal hotspot not working iphone 13,12/ iOS 15

Fix 5: Try reboot

Many times the hotspot not working on iOS 15 is simply resolved by restarting the iPhone or doing a hard reboot(Press and hold menu button and power button together until Apple logo appears 8-12 sec). But it quite possible that iPhone hotspot issue may appear back.