This Three UK prepaid SIM card provides 40GB of data and roaming in over 70 destinations, including the USA and the United Kingdom. It comes with a 30 days expiration date and offers unlimited text messages. The SIM card is compatible with 4G and 5G connectivity and includes free international calling service, a 20GB promo, and 6GB of roaming allowance. With a pay-as-you-go payment option, this SIM card is a convenient and reliable choice for international travel and communication needs.