If Clipboard copy is not working in Phone Link app, you need to enable Cross-device copy and paste, and if that doesn't work, follow these solutions.

Incorrect registry settings. Hard drive errors. Fix Volume Shadow Copy service not working To begin with, make sure that the Volume Shadow Copy service is enabled and running.

While there are ways to check your Mac's copy-and-paste functions similar to Windows, an Apple computer also possess some unique capabilities to keep in mind.