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  2. Timeline of the telephone - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_telephone

    1971: AT&T submitted a proposal for cellular phone service to the U.S. Federal Communications Commission (FCC). 3 April 1973: Motorola employee Martin Cooper placed the first hand-held cell phone call to Joel Engel, head of research at AT&T's Bell Labs, while talking on the first Motorola DynaTAC prototype.

  3. Boost Mobile (United States) - Wikipedia

    en.wikipedia.org/wiki/Boost_Mobile_(United_States)

    DISH Wireless L.L.C., doing business as Boost Mobile, is a United States wireless service provider owned by EchoStar. It operates using the Boost, AT&T and T-Mobile networks to deliver wireless services. As of Q3 2023, Boost Mobile, along with its sister brands Gen Mobile and Ting Mobile had 7.50 million customers.

  4. History of radio - Wikipedia

    en.wikipedia.org/wiki/History_of_radio

    In 1947 AT&T commercialized the Mobile Telephone Service. From its start in St. Louis in 1946, AT&T then introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. Mobile Telephone Service was a rarity with only 5,000 customers placing about 30,000 calls each week.

  5. Cellular frequencies - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies

    In Russia and some other countries, local carriers received licenses for 450 MHz frequency to provide CDMA mobile coverage area. Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1,800/1,900 MHz) or four bands (850/900/1,800/1,900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones; with such a ...

  6. Kroger Wireless - Wikipedia

    en.wikipedia.org/wiki/Kroger_Wireless

    Kroger Wireless is the private-label wireless service sold exclusively within the Kroger Family of Companies stores. [4] Kroger Wireless acts like other US prepaid carriers–requiring no contracts, activation fees, or credit checks to purchase their phones.

  7. Wireless device radiation and health - Wikipedia

    en.wikipedia.org/wiki/Wireless_device_radiation...

    The HPA also says that due to the mobile phone's adaptive power ability, a DECT cordless phone's radiation could actually exceed the radiation of a mobile phone. The HPA explains that while the DECT cordless phone's radiation has an average output power of 10 mW, it is actually in the form of 100 bursts per second of 250 mW, a strength comparable to some mobile phones.

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