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2. List of NFC-enabled mobile devices - Wikipedia

   en.wikipedia.org/wiki/List_of_NFC-enabled_mobile...

   Retrieved 16 February 2017. ^ Galaxy S IV Mini (Variant) SCH-I435, Samsung, 14 June 2014. ^ Galaxy S IV Mini (Variant) SM-S890L (PDF), Samsung, 14 June 2014. ^ Turkcell T40 Aygün, Turkcell. ^ Vodafone Smart III, Vodafone, archived from the original on 30 June 2013, retrieved 27 June 2013. ^ "NXP Deploys NFC in Nexus 7".

3. Nokia XR20 - Wikipedia

   en.wikipedia.org/wiki/Nokia_XR20

   Nokia XR20. Designed for the long run. Built to look good through life's rough and tumble.[ 1] The Nokia XR20 is a Nokia -branded smartphone that was manufactured by HMD Global. [ 3][ 4] The Nokia XR20 is also the last Nokia-branded smartphone that utilizes Zeiss optics due to HMD Global and Zeiss mutually parting way from the partnership. [ 5]

4. LTE (telecommunication) - Wikipedia

   en.wikipedia.org/wiki/LTE_(telecommunication)

   LTE stands for Long-Term Evolution [ 7] and is a registered trademark owned by ETSI (European Telecommunications Standards Institute) for the wireless data communications technology and a development of the GSM/UMTS standards. However, other nations and companies do play an active role in the LTE project.

5. LTE Advanced - Wikipedia

   en.wikipedia.org/wiki/LTE_Advanced

   LTE Advanced ( LTE+, LTE-A; [ 1] on Samsung Galaxy and Xiaomi phones — 4G+) is a mobile communication standard and a major enhancement of the Long Term Evolution (LTE) standard. It was formally submitted as a candidate 4G to ITU-T in late 2009 as meeting the requirements of the IMT-Advanced standard, and was standardized by the 3rd Generation ...

6. iPhone XR - Wikipedia

   en.wikipedia.org/wiki/IPhone_XR

   The iPhone XR (stylized and marketed as iPhone Xʀ; [ 18] Roman numeral "X" pronounced as "ten" [ 19]) is a smartphone designed, developed, and marketed by Apple Inc. It is part of the twelfth generation of the iPhone, alongside the higher-end iPhone XS/XS Max models. Pre-orders began on October 19, 2018, with the official release on October 26 ...

7. Comparison of mobile phone standards - Wikipedia

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

   GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.

8. Cellular frequencies in the United States - Wikipedia

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

   There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.

9. LTE in unlicensed spectrum - Wikipedia

   en.wikipedia.org/wiki/LTE_in_unlicensed_spectrum

   LTE in unlicensed spectrum ( LTE-Unlicensed, LTE-U) is an extension of the Long-Term Evolution (LTE) wireless standard that allows cellular network operators to offload some of their data traffic by accessing the unlicensed 5 GHz frequency band. [ 1] LTE-Unlicensed is a proposal, originally developed by Qualcomm, for the use of the 4G LTE radio ...