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  2. Mobile device - Wikipedia

    en.wikipedia.org/wiki/Mobile_device

    Samsung Galaxy S25 Ultra - examples of mobile devices. A mobile device or handheld device is an electronic device small enough to hold and operate in hand. Mobile devices are typically battery-powered and possess a flat-panel display and one or more built-in input devices, such as a touchscreen or keypad.

  3. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.

  4. Base station - Wikipedia

    en.wikipedia.org/wiki/Base_station

    Because mobile phones and their base stations are two-way radios, they produce radio-frequency radiation in order to communicate, exposing people near them to RF radiation giving concerns about mobile phone radiation and health. Hand-held mobile telephones are relatively low power so the RF radiation exposures from them are generally low.

  5. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    They are also used in computers and other electronic devices, such as mobile phones, for recording sounds, speech recognition, VoIP, and other purposes, such as ultrasonic sensors or knock sensors. Several types of microphone are used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical ...

  6. Multi-band device - Wikipedia

    en.wikipedia.org/wiki/Multi-band_device

    In telecommunications, a multi-band device (including (2) dual-band, (3) tri-band, (4) quad-band and (5) penta-band devices) is a communication device (especially a mobile phone) that supports multiple radio frequency bands. All devices which have more than one channel use multiple frequencies; a band however is a group of frequencies ...

  7. Mobile technology - Wikipedia

    en.wikipedia.org/wiki/Mobile_technology

    Mobile technology has evolved rapidly over the past few years. Since the start of this millennium, a standard mobile device has gone from being no more than a simple two-way pager to being a mobile phone, GPS navigation device, an embedded web browser and instant messaging client, and a handheld gaming console.

  8. Mobile computing - Wikipedia

    en.wikipedia.org/wiki/Mobile_computing

    Mobile applications might copy user data from these devices to a remote server without the users’ permission and often without the users’ consent. [4] The user profiles automatically created in the cloud for smartphone users raise privacy concerns on all major platforms, in terms of, including, but not limited to, location tracking [ 5 ...

  9. Improvised explosive device - Wikipedia

    en.wikipedia.org/wiki/Improvised_explosive_device

    A radio-controlled IED (RCIED) incorporating a mobile phone that is modified and connected to an electrical firing circuit. Mobile phones operate in the UHF band in line of sight with base transceiver station (BTS) antennae sites. In the common scenario, receipt of a paging signal by phone is sufficient to initiate the IED firing circuit.