How to set up App lock on Redmi Note 15 Pro

Start with the supported model

This guide covers the Redmi Note 15 Pro 4G listed in Xiaomi's UK FAQ. The setup and management steps come from Xiaomi's general App lock help. Software builds and regional labels can differ, so follow the options actually shown on your phone.

Xiaomi lists App lock as supported and App lock in background as unsupported for this model. This article covers the password protection for opening selected apps. It does not promise to keep apps running in memory or fix delayed notifications.

Choose an app and turn on its lock

1. Open Settings, then Apps and App lock.

2. Tap Turn on and follow the credential setup. Xiaomi's general instructions describe creating a pattern password.

3. At the Xiaomi Account prompt, decide whether to add the account for recovery. I'd read the recovery section below before skipping this.

4. Select the apps you want to protect and tap Use App lock. For the first check, I'd choose just one app so the result is easy to recognise.

Xiaomi also documents an optional fingerprint-unlock choice. Keep track of the App lock credential even if you choose to use a fingerprint day to day.

Check when the app locks again

Return to Settings > Apps > App lock and open its settings control at the upper-right. Xiaomi calls the timing option Lock settings: it decides when the App lock check applies.

Read the available choices before selecting one. I'd then open the protected app, authenticate, leave it and repeat the action that should make it lock again under that setting. The expected result is a fresh App lock prompt when the chosen condition applies. Simply returning to an already unlocked app is not a useful test unless your selected timing should lock it at that point.

If the behaviour differs, recheck that the app is selected and review the timing choice. Note your model and software version when asking Xiaomi support for help. There is no need to reset the phone just to investigate an unexpected prompt.

Check notification previews separately

In App lock settings, Xiaomi documents Hide notification content, where you choose the apps whose message text should be concealed. Its example replaces the message itself with a notice that a new message has arrived.

If that option is available on your build, select the relevant app. I'd ask someone to send a harmless test message and check the notification in the situations where you want its contents hidden. Opening an app and reading its notification preview are different checks, so verify both before relying on the setup.

Plan for a forgotten password

Xiaomi's password-settings help recommends adding a Mi Account, its wording for the account recovery option. It says a linked account can reset a forgotten App lock password; without it, the documented fallback is a factory reset. I'd confirm I can access my own Xiaomi Account before treating recovery as ready.

You can review the account option and Change password type from App lock's password settings where those controls are offered. Follow the phone's prompts. If you are already locked out, check the official recovery help for your build or contact Xiaomi support before erasing anything. A factory reset is not a casual troubleshooting step.

For the other basics I'd check when configuring a phone, see my new Redmi setup guide. Keep the phone's screen lock in place alongside any individual app protection.