Nobody likes strangers reading their personal WhatsApp messages. Therefore, iOS users are always looking for ways to keep prying eyes away from incoming messages. If you're in the same boat, it's a lucky day because there's a way to lock WhatsApp on the iPhone XS MAX, XS, X or XR with Face ID or lock it on the iPhone 8, 8 Plus, 7, 7 Plus, 6S, 6S Plus, 6S & 5S using Touch ID.
Once you have locked WhatsApp messages, you must approve them before launching the application. That said, you can still call and respond to people from the alert center. Read on for more information.
Steps to Lock WhatsApp on iPhone with Face ID or Touch ID
Before anything else, make sure Face ID or Touch ID is enabled on your handset. To enable it, go to Settings -> Touch ID or Face ID -> Password and set it up normally. Also, make sure you are using the latest version of WhatsApp> (2.1
Step 1: Open WhatsApp on the iPhone.
Step 2: Touch Settings at the bottom left.
Step 3: Touch "Accounts"> "Privacy"> "Screen Lock
Step 4: Turn on the switch next to Touch ID or Face ID. 
You can choose to configure the app to require an approval after 15 minutes, 1 hour or just one minute, choose it right away to get the best results.
Apps are Very Necessary
Wouldn't it be good if all other apps offered a feature like this? Such features add another layer to safeguard the user's data and prevent them from accessing the information without your permission. We hope that such features come in iOS 13. We guarantee that the Photos app also includes this functionality.
With many of the premium messaging applications, we expect others like Facebook Messenger, Snapchat and Instagram We want to hear what programs you want this security feature implemented in? You are welcome to leave comments.