This Hack requires a PC yet it is easy and simple to perform.
Steps to Recover deleted messages in Android :
1. First of all, download and install Android data recovery tool on your PC.
2. On your phone, head to Settings > Developer options and enable USB Debugging. If you don’t see Developers options, then here’s how to enable it.
3. Launch the tool on PC and connect your phone via a USB cable.
4. Select Messages and click on Recover. Now recovery process will begin.
This Hack can be a lifesaver in some situations.