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  2. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    Arbitrary Strength Unit (ASU) is an integer value indicating the received signal strength measured by the mobile phone. It is possible to calculate the real signal strength measured in dBm (and thereby power in Watts) by a formula. However, there are different formulas for 2G, 3G and 4G networks.

  3. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    Weak signal strength can also be caused by destructive interference of the signals from local towers in urban areas, or by the construction materials used in some buildings causing significant attenuation of signal strength. Large buildings such as warehouses, hospitals and factories often have no usable signal further than a few metres from ...

  4. Received signal strength indicator - Wikipedia

    en.wikipedia.org/wiki/Received_signal_strength...

    Cellular signal strength of -74dBm (or 66 asu) displayed on a smartphone.Also shown: signal bars of two cellular networks, and signal bars of a Wi-Fi network. In telecommunications, received signal strength indicator or received signal strength indication [1] (RSSI) is a measurement of the power present in a received radio signal.

  5. Arbitrary unit - Wikipedia

    en.wikipedia.org/wiki/Arbitrary_unit

    In science and technology, an arbitrary unit (abbreviated arb. unit, [1] see below) or procedure defined unit [2] (p.d.u.) is a relative unit of measurement to show the ratio of amount of substance, intensity, or other quantities, to a predetermined reference measurement. The reference measurement is typically defined by the local laboratories ...

  6. Comparison of mobile phone standards - Wikipedia

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

    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.

  7. Your old cell phone may be worth more than you think

    www.aol.com/news/2016-05-24-your-old-cell-phone...

    If old cell phones aren't the only vintage items you have stored away in your home, take a look at what some of the most valuable VHS tapes are going for. Related Articles. AOL.

  8. Should smartwatches be banned from weddings? One dress code ...

    www.aol.com/smartwatches-banned-weddings-one...

    A social media post about an Apple Watch ban went viral, and the internet is divided on whether smartwatches should be banned at weddings. What does an expert say?

  9. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    Two decades of evolution of mobile phones, from a 1992 Motorola DynaTAC 8000X to the 2014 iPhone 6 Plus. A mobile phone, or cell phone, [a] is a portable telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones (landline phones).