what is usim

User Identity Module (USIM) is a type of SIM card that is specifically used in 3G and 4G mobile networks. It provides enhanced security features and additional storage capacity compared to traditional SIM cards. In the UK market, USIM cards are commonly used by mobile network operators to ensure the security and integrity of their subscribers' data and communications. By using USIM cards, operators can offer advanced services such as mobile banking, secure authentication, and encrypted communication to their customers. Additionally, USIM cards can store more contact information, messages, and applications than regular SIM cards, making them a preferred choice for modern mobile devices.