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  2. iPhone 101: What is an ESN and how can it go bad? - Engadget

    www.engadget.com/2013-09-17-iphone-101-what-is...

    An ESN is the electronic serial number assigned to your iPhone and is used with CDMA phones instead of SIM cards. There are several good guides through eBay about what an ESN is and how it can go bad.

  3. Apple Now Lets You Check If An iPhone Is Stolen Before You ...

    techcrunch.com/2014/10/02/how-to-check-if-iphone...

    Apple has just released a tool that exists solely to verify whether or not a used iPhone has been locked down remotely by its rightful owner. All you need is the IMEI or the serial number.

  4. Electronic serial number - Wikipedia

    en.wikipedia.org/wiki/Electronic_serial_number

    Electronic serial number. Electronic serial numbers ( ESNs) were created by the U.S. Federal Communications Commission (FCC) to uniquely identify mobile devices, from the days of AMPS in the United States starting in the early 1980s. The administrative role was taken over by the Telecommunications Industry Association in 1997 and is still ...

  5. History of the iPhone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_iPhone

    The history of the iPhone development by Apple Inc. spans from the early 2000s to about 2010. The first iPhone was released in 2007. By the end of 2009, iPhone models ...

  6. List of Apple codenames - Wikipedia

    en.wikipedia.org/wiki/List_of_Apple_codenames

    AirPods Pro – B298 [4] AirPods Max – B515 [5] AirPort Base Station (1999) – Pogo. AirPort Express 802.11n (5th generation) – K31 [6] Apple IIe Card for the Macintosh LC – Double Exposure. Apple II 3.5" Disk Controller Card – NuMustang. Apple Color OneScanner 600/27 – Rio. Apple Color OneScanner 1200/30 – New Orleans.

  7. 7 Things You Need to Check Before Buying a Used iPhone - Engadget

    www.engadget.com/2016-08-03-7-things-you-need-to...

    With iPhone prices well over $500 nowadays, buying an affordable one can be a daunting idea. ... All you need is the IMEI or the serial number. Many people sell their iPhones within less than a ...

  8. In case your iPhone 3.0 upgrade breaks and you have to restore the iPhone, you should make sure to write down the serial number of your Mobile Authenticator ahead of time (or take a screenshot of ...

  9. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    The International Mobile Equipment Identity ( IMEI) [ 1] is a numeric identifier, usually unique, [ 2][ 3] for 3GPP and iDEN mobile phones, as well as some satellite phones. It is usually found printed inside the battery compartment of the phone but can also be displayed on-screen on most phones by entering the MMI Supplementary Service code ...