Can I surf the internet when I make a phone call? If so, what should I do?

1, Unicom card can make calls at the same time as long as the VoLTE function is turned on;

2. Mobile phones need to support VoLTE function, and some mobile phones can be upgraded to support VoLTE function. A: During the trial commercial period, you don't need to apply for VoLTE HD voice phone and HD video phone service. If a mobile phone user who supports the VoLTE function receives a SMS reminder to enable the VoLTE HD phone function, the user needs to confirm whether it is enabled or not, and inform him of the closing method, the use method of related services, business rules, etc.

B:VoLTE high-definition telephone service can also be opened or closed through business hall, Internet hall, mobile hall, short hall, 100 10.