Iphone HEX DEX

Discussion in 'iPhone Tips, Help and Troubleshooting' started by Trinity82, Feb 16, 2012.

  1. Trinity82 macrumors member

    Feb 15, 2012
    Trying to activate a iphone 4 I bought used. Upon online activation, it asks for a serial number. I enter the serial number and it is not the correct format.
    Someone told me to find the HEX or Dex number which I guess, is the Identifer (UDID).
    Through Itunes I found the UDID, it is a 40 digit number. Is this the same as the serial 11 digit number found on the iphone itself, through Settings..General..About?
  2. Arnezie macrumors 65816


    Oct 10, 2011

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