The next window shows Unlock with Fingerprint option enabled by default.When done, tap the checkmark icon at the top-right to confirm the changes. From the next window, you can tap on the PIN option at the top to pick between setting a four-digit pin or an alphanumeric Password.Toggle the switch on for the Passcode Lock.Scroll down to the Security section and select Passcode Lock.Select the Privacy and Security option under the Settings section.Open the Telegram app and select the three-bar menu icon in the top-left of the window.Here's how to enable passcode in the Telegram app on your Android phone. On Android phones, you can use the fingerprint scanner to lock the Telegram app besides using the passcode option. How to Protect Telegram Messages With a Passcode on Android You can also disable or enable the toggle for the Unlock with Face ID (or Unlock with Touch ID) from the window. On the following screen, select the Auto-lock option and pick the duration between 1 minute, 5 minutes, 1 hour, or 5 hours.You can tap on the Passcode options if you want to switch between a four-digit or six-digit passcode. Tap Turn Passcode On and enter a numerical passcode for locking your Telegram app.Older iPhone models without Face ID support will show Passcode & Touch ID.

Select the Passcode & Face ID for recent iPhone models.Open the Telegram app on your iPhone and tap on the cog-shaped Settings icon in the bottom-right corner.This method acts as an additional security layer besides unlocking the Telegram app using Face ID or Touch ID. How to Protect Telegram Messages With a Passcode on iPhoneĪdding a passcode to the Telegram messages on iPhone is a secure way to prevent unwanted access. Here's how you can protect your Telegram messages with a passcode on iPhone, Android, macOS, and even a Windows PC.

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