If you often lend your phone to friends or family, one thing is for sure: your Line chats won't be private anymore. You need a solution for this, so follow Taimienphi.vn's article on how to set a password lock for the Line app.
How to Lock Your Line Chat App with a Password
Step 1: Launch the Line app on your phone > tap on the More tab > select Settings.
Step 2: On the settings screen, scroll down and select Privacy to proceed to step 3.
Step 3: Under the Privacy settings, toggle the Passcode Lock option on. This feature helps you protect your conversations within this app. Only you can view the chats you're engaged in. Enter and confirm your password, then press Ok to complete the app password setup process.
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From now on, every time you open Line, the app will prompt you to enter the 4-digit passcode you set earlier. Doing so helps safeguard the privacy of your conversations with others.
