• Phone Blocks Installation Due to Virus Warning

    Step 1

    Open Settings

    Step 2

    Go to Security / Privacy / System Security

    Step 3

    Find Install unknown apps / Allow unknown sources, select the source app (e.g. Browser / File Manager)

    Step 4

    Enable Allow from this source

    Huawei / Honor

    Settings → Security & Privacy → More security settings → Install unknown apps → Select source app → Enable allow

    Xiaomi / Redmi

    Settings → Security & Privacy → More security settings → Install unknown apps → Select source app → Enable allow

    OPPO / Realme

    Settings → Privacy → Special app access → Install unknown apps → Select source app → Enable allow

    Vivo / iQoo

    Settings → Security → Privacy → Install unknown apps → Select source app → Enable allow

    Samsung

    Settings → Biometrics & Security → Install unknown apps → Select source app → Enable allow

    ⚠️ Notes:

    「Allow install unknown apps」 should only be enabled during installation; turn it off afterwards.