MEETS_BASIC_INTEGRITY The app is running on a device that passes basic system integrity checks. The device may not meet Android compatibility requirements and may not be approved to run Google Play services. For example, the device may be running an unrecognized version of Android, may have an unlocked bootloader, or may not have been certified by the manufacturer. MEETS_STRONG_INTEGRITY The app is running on an Android-powered device with Google Play services and has a strong guarantee of system integrity such as a hardware-backed proof of boot integrity. The device passes system integrity checks and meets Android compatibility requirements.

- android docs emphasis mine