What does vivoiQOOz5 mobile phone 2G network mean?

VivoiQOOz5 mobile phone 2G network means that it is reduced to 2G network use. This may be because there is no 4g network in the environment, and the mobile phone automatically drops to 2G network. If the mobile phone has been in the 2G network, it is necessary to check whether the mobile phone network mode is set to the priority 4G network, and the mobile phone needs to use the operator SIM card corresponding to the supported 4G network.

Disadvantages of vivoiQOOz5 mobile phone 2G network

First of all, 2G networks use weak encryption between mobile phones and mobile phone towers, which makes it easy for hackers to intercept users' telecommunications and text messages, and even invade mobile phones without sending any data packets. Secondly, there is no base station authentication technology in 2G networks, so pseudo base stations are prevalent, and many people receive spam messages and harassing calls, which is likely to be fraud by many pseudo base stations.

These vulnerabilities have been gradually fixed since the beginning of 4G network, but some base station simulators can be degraded to the vulnerabilities before the continued use of 2G network, so some mobile phone users may encounter 2G security problems now. The 2G network refers to the GSM network 199 1 0 years ago.