All iPhone models are world phones, so you can use them almost anywhere. Whether you are a GSM or CDMA network customer, you can roam internationally on GSM networks in over 200 countries or regions around the world. If you financed your iPhone with your wireless carrier, contact them to verify that you can roam internationally.
Availability of 5G and LTE data varies in some countries or regions and depends on carrier support for certain 5G and LTE radio frequencies. Contact your wireless carrier for more information regarding international roaming policies and rates. Information on iPhone support for 5G and LTE