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WhatsDeleted is an open source app that can recover deleted messages.
WhatsDeleted recovers deleted messages from (WhatsApp, Telegram, and Signal) by scanning your device notifications. also, you can also read your messages and chat anonymously.
HOW TO USE
When you open this app, you have to give notification permission for text messages. after that, you're all set up. When messages arrive the app will store all text messages on your device and if a message gets deleted the app will send you a notification to show you the deleted message.