1. Don't talk about state secrets or send confidential information by mobile phone.
2. Don't scan the QR code from unknown sources.
3. Do not connect to a free or unencrypted WIFI network.
4. It is not necessary to record the contact person's work unit, position, mobile phone number and other information in detail.
5. Don't connect your mobile phone to a confidential computer for charging and transmitting pictures.
6. It is not easy to turn on the GPS positioning function of the mobile phone.
7. Don't make video calls, take photos, surf the Internet, and record videos with your mobile phone in confidential places.
8. It is not easy to sell second-hand mobile phones.