The easiest way to check the available update is:
- Open Play Sore
- Search the same app
- Find the app, click on it and if you see Uninstall and Open options, it means there is no update available for it.
- If you see Uninstall and Update, there is an update available for it.
- By clicking on Update, you can update the app.
If you had allowed WhatsApp to take the back-up, you will be able to access the old information for sure.
Please revert in case of any query!
Community Manager - CCM.net