How to verify that an iPhone has been wiped clean

Discussion in 'iPhone' started by duelingdragons, Jun 25, 2010.

  1. duelingdragons macrumors 65816

    May 13, 2007
    Orlando, FL
    I'm selling my 3GS, I did a restore in iTunes, and it automatically upgraded to iOS4. I chose not to use a backup when I restored, and now it's giving me the "No SIM Installed" message.

    Is it safe to say that everything is wiped clean?

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