You can't score full marks on Android SafetyNet if you aren't using an unmodified stock ROM. https://developer.android.com/training/safetynet/attestation https

You can't score full marks on Android SafetyNet if you aren't using an unmodified stock ROM. https://developer.android.com/training/safetynet/attestation https://developer.android.com/training/safetynet/attestation So yes, some apps will refuse to run and in theory some services could refuse to accept requests from devices that aren't running unmodified images. I can definitely imagine something like Snapchat using this as they have actually been fairly aggressive at trying to prevent "unauthorized clients" that can save images without notification to the user.