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These are model Numbers of iPhone 5S. I want to know why two Model numbers of iPhones have the same FCC ID? I am assuming that as they are two models, they are NOT the same for Apple yet they have the same FCC ID . What constitutes a change of FCC ID and when does it take place?

Another example would be of iPhone 5 where Models A1428, A1429 and A1442 have the same FCC ID BCG‑E2599A.

Why so?

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closed as off-topic by Leon Heller, Bimpelrekkie, Chris Stratton, Enric Blanco, PeterJ Jun 28 '17 at 14:26

  • This question does not appear to be about electronics design within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

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    \$\begingroup\$ Question has nothing to do with electronic design and should be closed. \$\endgroup\$ – Leon Heller Jun 27 '17 at 19:33
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    \$\begingroup\$ Complying with regulatory standards has nothing to do with electronic design? :) \$\endgroup\$ – Dejvid_no1 Jun 27 '17 at 19:35
  • \$\begingroup\$ Apple does that because they can. So they do. What use is this information to you anyway ? \$\endgroup\$ – Bimpelrekkie Jun 27 '17 at 19:41
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    \$\begingroup\$ @Bimpelrekkie Information about FCC regulations could be quite useful for many people. While I don't directly deal with FCC regulations I find this question interesting and would like to know the answer for future reference. \$\endgroup\$ – Redja Jun 27 '17 at 20:20
  • \$\begingroup\$ None of these are for the US market, so why do they even have a FCC ID? \$\endgroup\$ – Passerby Jun 27 '17 at 21:55
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I get the impression that Apple has done testing of different functions on multiple hardware with similarities.

From FCC:

enter image description here

The FCC IDs applies to different frequencies. Could be the Wifi / Bluetooth module is tested and filed under one number for a specific model, but the radio was tested on another model.

From 2643B test report: enter image description here Hints of similarities with 2643A except for the Wifi.

Usually similarity is used so you don't have to retest every configuration (memory, battery, etc) of a hardware. But the exact definition of similarity probably have to be discussed with FCC.

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