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  2. Comparison of mobile phone standards - Wikipedia

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

    Capacity is IS-95's biggest asset; it can accommodate more users per MHz of bandwidth than any other technology. Has no built-in limit to the number of concurrent users. Uses precise clocks that do not limit the distance a tower can cover. [7] Consumes less power and covers large areas so cell size in IS-95 is larger.

  3. List of iPhone models - Wikipedia

    en.wikipedia.org/wiki/List_of_iPhone_models

    35 minutes for iPhone 15 Pro Max, iPhone 16 Plus and iPhone 16 Pro Max Wireless Charging 25 W MagSafe (with 30 W adapter or higher), 15 W Qi2 and 7.5 W Qi wireless charging MagSafe and Qi wireless charging: Resistant IP68 (Maximum depth of 6 meters up to 30 minutes) Dimensions Height 163 mm (6.4 in) 149.6 mm (5.89 in) 160.9 mm (6.33 in)

  4. Batterygate - Wikipedia

    en.wikipedia.org/wiki/Batterygate

    The controversy first emerged in late-2016, when it was reported that since a recent iOS update, some iPhone handsets had begun to experience unexpected shutdowns when their battery capacity reached 30%, caused by drops in the battery's terminal voltage below a threshold of around three volts required for operation of the device.

  5. 4G - Wikipedia

    en.wikipedia.org/wiki/4G

    In November 2008, the International Telecommunication Union-Radio communications sector (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s)(=12.5 megabytes per second) for high mobility communication (such as from ...

  6. Power factor - Wikipedia

    en.wikipedia.org/wiki/Power_factor

    The power factor in a single-phase circuit (or balanced three-phase circuit) can be measured with the wattmeter-ammeter-voltmeter method, where the power in watts is divided by the product of measured voltage and current. The power factor of a balanced polyphase circuit is the same as that of any phase. The power factor of an unbalanced ...

  7. State of charge - Wikipedia

    en.wikipedia.org/wiki/State_of_charge

    State of charge (SoC) quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing. [1] It is usually expressed as percentage (0% = empty; 100% = full). An alternative form of the same measure is the depth of discharge , calculated as 1 − SoC (100% = empty; 0% = full).

  8. iPhone hardware - Wikipedia

    en.wikipedia.org/wiki/IPhone_hardware

    The top and side of an iPhone 5S, externally identical to the SE (2016).From left to right, sides: wake/sleep button, silence switch, volume up, and volume down. The touchscreen on the iPhone has increased in size several times over the years, from 3.5 inches on the original iPhone to iPhone 4S, to the current 6.1 and 6.9 inches on the iPhone 16 and 16 Pro Max series. [1]

  9. LTE Advanced - Wikipedia

    en.wikipedia.org/wiki/LTE_Advanced

    LTE Advanced signal indicator in Android LTE Advanced signal indicator on Xiaomi phones LTE Advanced signal indicator (4G+) on Samsung Galaxy phones in Europe LTE Advanced ( LTE+ , LTE-A ; [ 1 ] on Samsung Galaxy and Xiaomi phones — 4G+ ) is a mobile communication standard and a major enhancement of the Long Term Evolution (LTE) standard.