They "catch" the message the moment it arrives and save a copy in their own database.

Ensure you have a backup that was created after the message arrived but before it was deleted.

Apps like WhatsDelete or WAMR work by monitoring your notifications.

This is the only reliable way to see deleted content on an iPhone.

iOS has stricter privacy rules, making it harder to "intercept" notifications.

Follow the setup prompts and select Restore Chat History .

Uninstall WhatsApp and reinstall it from the App Store .

Android offers the most flexibility due to how it handles notification data.