Do you want to receive floating notifications for your Whatsapp conversations?
Now is possible thanks to Geyser Whats App!
Install Geyser Whats App and start to receive floating notifications whenever a contact writes to you. Since that moment you will be able to enable floating messages for such conversation.
This way you will be able to keep reading Whatsapp messages even when the app is not opened or you are doing other things on your device.