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Ah sorry, "phone app" was slightly misleading. It's a special kind of phone app that's saved on the SIM card. https://en.wikipedia.org/wiki/SIM_Application_Too
by kristofferR 9y ago
Ah sorry, "phone app" was slightly misleading. It's a special kind of phone app that's saved on the SIM card.
https://en.wikipedia.org/wiki/SIM_Application_Toolkit https://en.wikipedia.org/wiki/SIM_Application_Toolkit