1. iMore Question's Avatar
    i was using iPhone 5S factory unlocked and it was working properly, since yesterday i was not able to connect to my sim provider but able to use all apps via wifi. i checked and found sim as ok. so i took backup of device in iTunes and reset all data settings of iPhone and restarted. When i restarted it connected to Wifi but said Device Unknown. I connected to iTunes and have same error. when i click error area its showing IMEI number but showing ICCID Unknown.

    what to do and how to fix this problem ?
    04-17-2014 03:39 PM
  2. iOS Gravity's Avatar
    Try restoring it without restoring from a backup. See if that works.
    04-17-2014 03:40 PM
  3. duongminhtuan's Avatar
    why does my iphone 5 show IMEI number but ICCID unknown?
    08-16-2014 09:43 AM
  4. rdiddy_25's Avatar
    Did you try iOS 8 Gravity's suggestion??
    08-16-2014 10:20 AM
  5. vasantha raja's Avatar
    I will try ios 8
    05-31-2015 06:01 AM
  6. Saidul Islam's Avatar
    i was using iPhone 5S factory unlocked and it was working properly, since yesterday i was not able to connect to my sim provider but able to use all apps via wifi. i checked and found sim as ok. so i took backup of device in iTunes and reset all data settings of iPhone and restarted. When i restarted it connected to Wifi but said Device Unknown. I connected to iTunes and have same error. when i click error area its showing IMEI number but showing ICCID Unknown.

    what to do and how to fix this problem ?
    07-19-2016 10:51 AM
  7. AbongileBani's Avatar
    I am also currently experiencing the same issue - ICCID Unknown
    SIM Card is fine though eisha
    12-20-2016 02:27 AM

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