Please tell us some basic information before asking for help:
Model Name: Asus Zenfone 7 Pro
Firmware Version: WW_29.12.18.14
Rooted or not: Not Rooted
Frequency of Occurrence: Permanent
APP Name & APP Version (If your issue relates to the app): No App - System Setting
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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Everytime I call someone on the phone I can't use the mobile data to search something in the internet at the same time. So as far as I know to avoid this problem VoLTE has to be active, so how can it be activated on the phone?
