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2. iDEN - Wikipedia

   en.wikipedia.org/wiki/IDEN

   Integrated Digital Enhanced Network ( iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone.

3. Nextel - Wikipedia

   en.wikipedia.org/wiki/NEXTEL

   Nextel's network operated in the 800-MHz Specialized Mobile Radio band and used iDEN technology developed by Motorola. Nextel's iDEN network offered a then unique push-to-talk "walkie-talkie" feature in addition to direct-dialed voice calls.

4. International Mobile Equipment Identity - Wikipedia

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

   International Mobile Equipment Identity. 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 ...

5. Cellular frequencies in the United States - Wikipedia

   en.wikipedia.org/wiki/Cellular_frequencies_in...

   Cellular frequencies in the United States are allocated by the US Federal Communications Commission. As cellular mobile telephone technology has evolved over time, periodically bands of frequencies are reassigned from other radio services. Companies wishing to provide cellular services in a geographic region compete for the right to license radio spectrum in spectrum auctions. Different ...

6. Comparison of mobile phone standards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_mobile_phone...

   Comparison of mobile phone standards. Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones. A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.

7. Refurbishment (electronics) - Wikipedia

   en.wikipedia.org/wiki/Refurbishment_(electronics)

   Refurbishment (electronics) In electronics, refurbishment is the practice of restoring and testing a pre-owned electronic device so that it can be re-sold. Refurbished electronics are therefore pre-owned electronic devices (usually smartphones, tablets, or laptops ), that have been tested by a reseller to confirm that they are fully working.