In the US, Factory Reset Protection (FRP) is a mandatory part of each mobile ecosystem. The use of factory reset protection in mobile devices helped tame smartphone theft by discouraging criminals and dramatically reducing resale value of stolen devices. Compared to other mobile ecosystems, Apple’s implementation of factory reset protection has always been considered exemplary. A combination of a locked bootloader, secure boot chain and obligatory online activation of every iPhone makes iCloud lock one exemplary implementation of factory reset protection.