The Lava Iris 88 Go Android device with a build fingerprint of LAVA/iris88_go/iris88_go:8.1.0/O11019/1538188945:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.