How To Fix "apple Push" Errors Link
If you are developing an app and encountering errors, verify these backend and configuration steps: Troubleshooting push notifications - Apple Developer
TCP port 443 is used as a fallback if port 5223 is blocked. How to Fix "Apple Push" Errors
For iCloud Mail, ensure "Push" is enabled under Settings > Apps > Mail > Accounts > Fetch New Data . Network & Connection Requirements If you are developing an app and encountering
Go to Settings > Notifications and ensure "Allow Notifications" is enabled for the specific app. How to Fix "Apple Push" Errors