How to allow installing apps from unknown sources on a OnePlus

Device

Android

Shown on

OnePlus Nord 5 (CPH2709), OxygenOS 16.0.5.1201, Android 16

App

Settings

Path

Settings › Security and privacy › More security and privacy › Installation sources

Real screenshots

4 of 4 steps

Checked

October 2026

Sources

2 official, linked below

Step by step

1. 

   Searching unknown won't find it

   On ours, unknown found only Unknown tracker alerts and Blood type.

   Done

2. 

   Search install instead

   Installation sources is under Security and privacy, More security and privacy. Tap it.

   Done

3. 

   Or open More security and privacy

   Open Settings, Security and privacy, More security and privacy.

   Done

4. 

   Switch on one app

   Installation sources lists apps that can install others: Chrome, Drive, Files by Google, Gmail, Internet, My Files. All were off.

   Done

If you do not see this option

• Not in Special app access? On ours, Apps, Special app access lists Modify system settings, All files access, Wi-Fi control and more, but no install option.
• Older OxygenOS? Older Android versions call it Install unknown apps. Source: Download apps to your Android device

If this does not work

• Play Protect warns? It checks apps from any source. Source: Use Google Play Protect to help keep your apps safe & your data private
• Switch greyed out? Advanced Protection, on the Security and privacy page, can block installs from outside Play.
• Done installing? Switch the app off again.

About this guide

Android blocks apps from outside Google Play unless you allow the app that downloads them.

The screenshots are from our OnePlus Nord 5 with OxygenOS 16.0.5.1201 and Android 16, in Dark mode. All were off. We looked and changed nothing.

Good to know

Scan for harmful apps with Play Protect on a OnePlus.

In short: Security and privacy, More security and privacy, Installation sources.