axiom-cloud-sync-diag
iCloud Sync Diagnostics
Overview
Core principle 90% of cloud sync problems stem from account/entitlement issues, network connectivity, or misunderstanding sync timing—not iCloud infrastructure bugs.
iCloud (both CloudKit and iCloud Drive) handles billions of sync operations daily across all Apple devices. If your data isn't syncing, the issue is almost always configuration, connectivity, or timing expectations.
Red Flags — Suspect Cloud Sync Issue
If you see ANY of these:
- Files/data not appearing on other devices
- "iCloud account not available" errors
- Persistent sync conflicts
- CloudKit quota exceeded
- Upload/download stuck at 0%
- Works on simulator but not device
- Works on WiFi but not cellular
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