Why can the apps running in the background not connect to data network?
Does vivo phone support 5G network?
What should I do if the data network speed is slow?
What should I do if there is no network and signal?
15. It prompts "There is a problem with the security certificate for this page" while visiting the website. What should I do?
Why can I not watch videos with 4G network?
4. Why can I not turn on the data network?
Why can I not use data network?
Why does the data drain much every day?
Why can I not enable the network of two SIM cards simultaneously?
Some apps cannot connect to network. What should I do?
The downloading in the background always stops. What should I do?
Can I use data network when I am on a call via the main card?
Why can I not use data network when I am on a call via the secondary card?
The online files cannot be downloaded normally. What should I do?