ThisThe following steps from How can I recover deleted Telegram chats? should work:
Use the iKeyMonitor app to recover all the messages that you need quickly.
- Sign up
Sign up for a 3-day free account of iKeyMonitor to recover deleted Telegram messages.
- Log in to the Cloud Panel
Log in to the Cloud Panel to download iKeyMonitor to the target Android phone or iPhone.
- Install iKeyMonitor
Install iKeyMonitor and activate it with your license key.
- Start Recovering
Start recovering deleted Telegram messages on Cloud Panel.
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