Yes. If you purchased your phone from us and will use a number from another carrier, you need to unlock it.
Customers using iPhone 13 models can use Dual SIM with either two active eSIMs or a nano-SIM and an eSIM. iPhone 12 models, iPhone 11 models, iPhone XS, iPhone XS Max, and iPhone XR, support Dual SIM with a nano-SIM and an eSIM.
Learn how to set up Dual SIM on a compatible iPhone to use two lines on a single iPhone.