How to Check Play Protect Certification on Android and What to Do if You See an Error
If your banking app, wallet, streaming service, or work login stopped working and you saw Device is not certified, the first step is to check your phone's certification status inside Google Play. Device certification is not the same as Google Play Protect scanning: one shows whether the phone passed Android compatibility tests, while the other helps detect harmful apps [F1][F2].
In practical terms, turning Play Protect off will not fix the certification warning. Google explicitly says device certification and Play Protect are separate systems [F1][F2].
Quick answer
Open the Google Play Store app.
Tap your profile, then open Settings > About.
Check the Play Protect certification field [F1][F2].
If it says Certified, the issue is more likely tied to the app itself, the network, or another device setting.
If it says Device is not certified, use Fix device issue when available and follow the on-screen guidance [F1].
Last checked
Checked on July 27, 2026, using official Android Help and Google Play Help pages about certification status, Play Protect, and supported devices [F1][F2][F3].
What Play Protect certification means
Android Help says Play Protect certified devices include Google-licensed proprietary apps and have passed Android compatibility testing [F1].
Google also warns that devices without Play Protect certification may not be secure, may miss Android or app updates, may use unlicensed Google apps, may not work correctly with some features, and may not have secure backups [F1].
How to check the status on your phone
The official path is short:
open Google Play Store;
tap your profile icon;
open Settings;
open About;
review Play Protect certification [F1][F2].
If you are also trying to validate your device's broader integrity, a useful companion read is Android System SafetyCore: what it is, what it does, and when to worry.
Certification is not the same as Play Protect scanning
This is the main point users mix up.
Device certification tells you whether the phone passed compatibility checks and is eligible to include licensed Google apps [F1].
Google Play Protect scans apps and the device for harmful behavior, warns about risks, and may disable or remove dangerous apps [F2].
Google states directly that a Device is not certified issue should not be troubleshot by turning Play Protect off [F1][F2].
What to do if you see `Device is not certified`
1. Check the official supported-device list
Google Play Help publishes a supported-device list and states that only Play Protect certified devices are supported. If your model is not listed, it may be too new, incompatible with Google Play, or truly uncertified [F3].
Before drawing conclusions, confirm the exact model in Settings > About phone or About tablet, as Google recommends [F3].
2. Use `Fix device issue` if it appears
Android Help says that if the device is on the certified list but still throws the error, you should tap Fix device issue and follow the guidance shown on the phone [F1].
3. Read the specific error behind the warning
Android Help lists concrete causes and matching next steps [F1]:
no stable network connection;
outdated Google Play services;
Google Play services missing or disabled;
unlocked bootloader;
rooted device or modified Android build;
temporary failure in the validation flow.
That matters because the correct fix depends on the underlying reason.
4. Restore the phone to the manufacturer's original state if it was modified
For unlocked bootloaders, root, or custom Android builds, Google's official guidance includes relocking the bootloader, unrooting, updating Android, factory reset, and restoring the original manufacturer-signed build [F1].
If you bought a used or heavily customized phone, this step deserves extra scrutiny.
5. Install updates and restart
Google also recommends checking for Android updates and restarting the phone if no updates are available [F1].
On older phones, Android 5.1.1 in 2026: does it still work or is it a real risk now? is another relevant companion read.
When to treat the warning as urgent
Be more careful if one of these also applies:
banking or payment apps stopped working together with the warning;
the phone was rooted, unlocked, or flashed;
you bought it from a questionable source;
Google Play services seems missing or altered;
the phone also shows malware warnings, suspicious apps, or recurring pop-ups.
If you also received harmful-app warnings, continue with How to Remove Android Malware Without a Factory Reset and How to Avoid Android Malware Before It Starts.
What not to do
do not disable Play Protect as a test;
do not install random APKs that promise to 'certify' the phone;
do not ignore an unlocked bootloader on a used device;
do not jump to a reset before understanding whether the issue is network, Play services, or system modification;
do not keep using the phone for sensitive banking or work if it remains uncertified.
Sources
[F1] Android Help - Check & fix Play Protect certification status
[F2] Google Play Help - Use Google Play Protect to help keep your apps safe & your data private