Most carriers outside the US also use GSM networks. You will need to use a SIM card from a GSM provider to get service for your unlocked phone. Work on carriers that use GSM networks all around the world.
Item Tag: SM-G988U1, G988U1
Samsung Galaxy S20 Ultra 5G SM-G988U1 128GB Factory Unlocked All Carriers Color
Samsung Galaxy S20 Ultra 5G SM-G988U1 128GB Factory Unlocked Black/Gray/White. 128GB 12GB RAM. GSM / CDMA / HSPA / EVDO / LTE / 5G. 120Hz@FHD/60Hz@QHD refresh rate. Qualcomm SM8250 Snapdragon 865 5G (7 nm+).