How to turn on 3G or 4G on Vivo X80
If you need to have access to the web on your Vivo X80, you will need to use the 3G or 4G network. It oftentimes happens for one reason or another that the 4G or 3G network of the Vivo X80 is deactivated. In this case, it is impossible for the mobile phone to connect … Read more