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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.
speed* Typical download speed* Theoretical maximum upload speed* Typical upload speed* Frequency band Channel spacing Maximum range (distance from antenna) Year of commercial implementation 0G SN, SN+ 2B/s: 50-150MHz: 1946 0.5G SI 200-350MHz: 1958 analog & digital ↓ 1G NMT, AMPS, TACS… 400-450MHz: 1979 1.5G D-AMPS 30kHz: digital ↓ 2G GSM ...
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Typical 2G standards include GSM and IS-95 with extensions via GPRS, EDGE and 1xRTT, providing Internet access to users of originally voice centric 2G networks. Both EDGE and 1xRTT are 3G standards, as defined by the ITU , but are usually marketed as 2.9G due to their comparatively low speeds and high delays when compared to true 3G technologies.
We tried out the best iPhone chargers by refuelling our devices – including an iPhone 15 Plus, 15 Pro Max and SE – and timing how long they took while evaluating specs, design and convenience ...
Further GSM-850 is also sometimes called GSM-800 because this frequency range was known as the "800 MHz band" (for simplification) when it was first allocated for AMPS in the United States in 1983. In North America GSM-1900 is also referred to as Personal Communications Service (PCS) like any other cellular system operating on the "1900 MHz band".
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