Yes. To enjoy VoLTE, you need to be a 4G LTE network subscriber. Thus, you need USIM simcard for your phone.
How do I know my simcard is USIM or not?
You can send SMS “LTE <phone number>" to 20000. If your sim card is the USIM type, you will receive the message below:
Where can I replace my current sim card for a USIM?
At any Digi store. Find a store near you.
What are the charges for sim card replacement?