Pure JSQ VPN

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.