The Xiaomi Redmi Note 6 Pro Android device with a build fingerprint of xiaomi/tulip/tulip:8.1.0/OPM1.171019.011/V10.2.2.0.OEKMIXM:user/release-keys contains a pre-installed app with a package name of com.qualcomm.qti.callenhancement app (versionCode=27, versionName=8.1.0) that allows other pre-installed apps to perform microphone audio recording via an accessible app component. This capability can be accessed by any pre-installed app on the device which can obtain signatureOrSystem permissions that are required by other other pre-installed apps that export their capabilities to other pre-installed app. This app allows a third-party app to use its open interface to record telephone calls to external storage.

Xiaomi Stock Browser 10.2.4.g on Xiaomi Redmi Note 5 Pro devices and other Redmi Android phones allows content provider injection. In other words, a third-party application can read the user's cleartext browser history via an app.provider.query content://com.android.browser.searchhistory/searchhistory request.