IPhone 15 models are activated with an eSIM and do not help a Actual physical SIM. Usage of an eSIM requires a provider that supports eSIM plus a wireless service system (which can consist of restrictions on switching company suppliers and roaming, even soon after contract expiration). See your provider https://artsyphonecase78901.ampedpages.com/considerations-to-know-about-phone-case-iphone-15-pro-56886785