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  2. 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 ...

  3. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink). Depending on various factors, such as proximity to a tower , any obstructions such as buildings or trees, etc. this signal strength will vary.

  4. 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.

  5. You’re Not Imagining It: Cell Phone Reception Is Getting Worse

    www.aol.com/finance/not-imagining-cell-phone...

    A separate test to check my cell phone signal strength found that at home, I had something called RSRP of -108 – generally considered “poor signal,” and at the office, I had RSRP of -111 ...

  6. Comparison of smartphones - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_smartphones

    Apple iPhone 13: 146.7 mm × 71.5 mm × 7.7 mm 174 g 3227 mAh Lightning, 20 W Wireless, 15 W 6.1", 2532×1170, OLED Apple iPhone 13 Pro: Apple 5-core 128/256/512/1024 GB 6 GB 204 g 3095 mAh 6.1", 2532×1170, 120 Hz OLED 12 MP (wide) + 12 MP (ultrawide) + 12 MP (telephoto) Apple iPhone 13 Pro Max: 160.8 mm × 78.1 mm × 7.7 mm 240 g 4352 mAh

  7. Cellular frequencies - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies

    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 phone one can travel internationally and use the same handset. This portability is not as extensive with IS-95 phones, however, as IS ...