Yes. You buy minutes (or "top-ups") in advance to keep the service active.

Buying minutes depends entirely on the you have, not just the physical phone itself. While you can buy minutes for almost any phone, the method changes based on whether your service is prepaid or postpaid. 📱 Quick Answer: Can You Buy Minutes?

Buy prepaid credit for international calls | KeepCalling.com

Shop through a wide selection of Cell Phone Minutes at Amazon.com. Free shipping and free returns on eligible items. Amazon.com