FIX for Universal Clipboard copy/paste not working

I, like many people, have found that Universal Clipboard copy/paste stops working for no reason. I have a iPhone 12 Pro and an M1 MacBook Air.

All Handoff features work (e.g apps from phone showed up in dock) except copy/paste. I'd tried:

• turning BT and Wireless on and off again
• Turning off/on Handoff on Mac/iPhone
• Turning everything off on both devices, restarting, turning back on again
• Deleting BT preferences
• Even signed out of iCloud on my phone and back in again.

NOTHING worked. Until this.

Make sure you're logged in to iCloud, same account, both devices. Handoff on in preferences as usual.

Go to Terminal, and type in:

defaults delete ~/Library/Preferences/com.apple.coreservices.useractivityd.plist ClipboardSharingEnabled

press enter

defaults write ~/Library/Preferences/com.apple.coreservices.useractivityd.plist ClipboardSharingEnabled 1

press enter

Universal Clipboard immediately starts working.

I've had to do this twice now, it just seems to break after a while.