files not sync between iPhone and Mac

Hymalaya Said:

"files not sync between iPhone and Mac: some files are on my mac but do not sync with my iPhone. iCloud is on on both"

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Two Things to Try:

A. Boot in Safe Mode:

In Safe Mode, login items do not open at login, certain System Preferences are set aside, and damaged system files are intentionally fixed.

1. Boot into: Safe Mode [Hold Down the shift key upon boot].
2. Log in: as same user
3. Wait: 30 seconds
4. Restart: the Mac
5. Boot Up: normally
6. Log in: as same user

B. New iCloud Session:

Log out of, and then back into, iCloud on both devices.