Download the APK from the reviewed page, confirm the publisher and current version, then allow installation only for the browser or file manager opening the file. Review the application name and requested permissions shown by Android before confirming, and turn off that source-specific permission afterward.
Step-by-step checklist
- Download the APK once and wait until the browser reports completion.
- Confirm the filename, version and any checksum published by the operator or reviewed source.
- Check that your phone uses Android 5.0 or later and supports 64-bit ARM applications.
- Open Settings, Apps, Special app access, then Install unknown apps.
- Select only the browser or file manager that will open this APK and enable Allow from this source.
- Open Downloads, tap the APK and review the app name and requested permissions shown by Android.
- If the displayed app identity is unexpected, cancel and investigate the package before continuing.
- After the install decision, return to Settings and disable Allow from this source.
Checks before you continue
- A checksum matches the operator-provided value when one is published.
- The application label and package name are the app you intended to install.
- Android version and CPU architecture meet the package requirements.
- Camera, storage, network and other requested permissions have a clear feature reason.
| Field | What to verify |
|---|---|
| Source | Page domain and download destination are expected |
| Publisher | Publisher information matches the app you selected |
| Version | Current version and update date are visible |
| Compatibility | Android version and device architecture are supported |
| Permissions | Every sensitive permission has a clear feature reason |
| Integrity | Use a publisher-provided checksum when one is available |
Before enabling installation access
Record the source page, displayed version, download date and any publisher information available. This gives you a reference if an update, permission prompt or installation error appears later.
Why Android asks for source-specific permission
On modern Android versions, installation access is granted to a specific browser or file manager rather than switched on for every app. This makes it easier to permit one install path and remove that permission afterward. Menu wording can differ on Samsung, Xiaomi, OnePlus and other devices.
Review permissions before opening the app
Compare every sensitive permission with a feature you intend to use. Network access is expected for online play, while camera or storage access should have a clear explanation such as profile images, document upload or support attachments. A permission declaration does not show when access will be used, so Android's runtime prompt is another point to review before granting it.
Installation is not identity verification
Android verifies that an APK is signed; it does not automatically confirm that a marketing filename represents the publisher you expected. The signing certificate and package name should remain consistent between updates. A different signing key can cause an update failure or create a separate app.
What to do after installation
Open Android's App info screen before signing in. Review the displayed permissions, mobile-data use, battery access and notification settings. Grant sensitive permissions only when the related feature is being used. Keep the original download date and version in your notes so you can compare a later update. If the app immediately requests unrelated access, redirects to another installer or asks for payment credentials outside its normal flow, close it and return to the verified source.
Frequently asked questions
Where is Install unknown apps on Android?
A common path is Settings, Apps, Special app access, Install unknown apps. Select the browser or file manager that opens the APK.
Why should I turn the permission off afterward?
It reduces the chance that the same browser or file manager can install another downloaded package without a fresh decision.
Will one APK run on every Android phone?
Compatibility depends on Android version, CPU architecture, screen configuration and how the package was built. Check the publisher's current requirements.
Does a matching checksum prove the app is official?
It proves the file matches the copy associated with that checksum. Publisher identity still depends on a verifiable distribution source and signing record.
Sources reviewed
- Google Pixel Help: apps from other sourcesSource-specific Android installation setting and Play Protect notes.
- Android Developers: APK signingAPK format and signing-key requirements.