SIM toolkit Special package for dual-sim devices? Enables carriers to initiate "value-added services". Basically, some operators provide SIM-cards with applications installed on them. https://en.wikipedia.org/wiki/SIM_Application_Toolkit#cite_note-CellularZA-1 Has been abused: - SimJacker: https://thehackernews.com/2019/09/simjacker-mobile-hacking.html - WIBattack: https://www.zdnet.com/article/new-sim-card-attack-disclosed-similar-to-simjacker/ WARNING: do mind that disabling/uninstalling this package will break mobile identity management which could be used by apps (for example your Bank) to authenticate you. See https://en.wikipedia.org/wiki/Mobile_identity_management
Phones target this application