Why Apple Switched to MicroSIMs

Discussion in 'iPad General Discussions' started by 4phun, Apr 21, 2010.

  1. 4phun

    4phun
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    MicroSIMs come with a couple extra features:
    • allow for multiple simultaneous applications accessing the card through logical channels;
    • introduce mutual authentication as a way to eliminate carrier spoofing by allowing the SIM card to authenticate the cell tower to which it is connecting;
    • add a new PIN protection with hierarchical PIN management with a universal PIN, an application PIN and a local PIN;
    • expand the phonebook storage of the SIM card with entries for email, second name, and groups.
     
  2. gentlefury

    gentlefury
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    forgot, hardware locking the device to AT&T while saying it is an unlocked device.
     

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