The scenario involves an embedded SIM (eSIM) present within a mobile telephone that is subject to a usage restriction imposed by a carrier or other entity. This restriction typically prevents the device from being used with SIM cards or eSIM profiles from other providers. As an example, a device purchased from a specific network operator might be programmed to function exclusively with that operator’s services, even if it contains an active and functional eSIM.
This lock is a crucial element in various business models and security strategies. Network carriers often utilize this technique to retain customers and recoup device subsidies provided at the point of sale. Furthermore, it can be employed as a security measure to deter theft or unauthorized resale of mobile devices, particularly those acquired through financed payment plans. Historically, this practice has evolved alongside mobile technology advancements, from physical SIM card locks to the more sophisticated software-based restrictions applicable to modern eSIM implementations.
