Some aggressive battery optimizations (MIUI, OneUI, ColorOS) may need to be disabled for the app to run reliably in background.
The specific version you mentioned—"v3.1.7 build 26 Apk-XpoZ"—appears to be an . Downloading and installing apps from unofficial repositories (outside the Google Play Store ) carries significant risks, including: Secret Video Recorder Pro v3.1.7 build 26 Apk-XpoZ