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  2. Comparison of mobile phone standards - Wikipedia

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

    Able to produce a reasonable call with lower signal (cell phone reception) levels. Uses soft handoff, reducing the likelihood of dropped calls. IS-95's variable rate voice coders reduce the rate being transmitted when speaker is not talking, which allows the channel to be packed more efficiently. Has a well-defined path to higher data rates.

  3. Telephone card - Wikipedia

    en.wikipedia.org/wiki/Telephone_card

    A telephone card, calling card or phone card for short, is a credit card-size plastic or paper card used to pay for telephone services (often international or long-distance calling). It is not necessary to have the physical card except with a stored-value system; knowledge of the access telephone number to dial and the PIN is sufficient.

  4. List of wireless network protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_wireless_network...

    EV-DO is not designed for voice, and requires a fallback to 1xRTT when a voice call is placed or received. Notes: All speeds are theoretical maximums and will vary by a number of factors, including the use of external antennas, distance from the tower and the ground speed (e.g. communications on a train may be poorer than when standing still).

  5. Prepaid calling cards: Beware misleading call times and ... - AOL

    www.aol.com/news/2010-06-30-prepaid-calling...

    Depending on who you ask, prepaid calling cards are either a tremendous rip-off or a fantastic money saver -- but based on an ongoing government crackdown against shady operators, lots of ...

  6. Category:Computing comparisons - Wikipedia

    en.wikipedia.org/wiki/Category:Computing_comparisons

    Comparison of IPv6 support in common applications; Comparison of IPv6 support in operating systems; Comparison of Lumia smartphones; Comparison of mobile phone standards; Comparison of single-board microcontrollers; Comparison of tablet computers; Comparison of usability evaluation methods; Comparison of USB TV tuner sticks; List of wireless ...

  7. List of mobile network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_network...

    Four of the top five wireless providers have all standardized on 4G LTE and 5G NR as their wireless communication standards, whereas Boost Mobile uses only 5G NR.Of which, LTE has been deployed across their entire coverage area; however, the LTE bands used by each provider remain largely incompatible.

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