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2. Cellular frequencies - Wikipedia

   en.wikipedia.org/wiki/Cellular_frequencies

   As mobile phones became more popular and affordable, mobile providers encountered a problem because they couldn't provide service to the increasing number of customers. They had to develop their existing networks and eventually introduce new standards, often based on other frequencies.

3. Mobile operating system - Wikipedia

   en.wikipedia.org/wiki/Mobile_operating_system

   A mobile operating system is an operating system used for smartphones, tablets, smartwatches, smartglasses, or other non-laptop personal mobile computing devices.While computers such as typical/mobile laptops are "mobile", the operating systems used on them are usually not considered mobile, as they were originally designed for desktop computers that historically did not have or need specific ...

4. GSM - Wikipedia

   en.wikipedia.org/wiki/GSM

   GSM utilizes a cellular network, meaning that cell phones connect to it by searching for cells in the immediate vicinity. There are five different cell sizes in a GSM network: macro; micro; pico; femto, and; umbrella cells; The coverage area of each cell varies according to the implementation environment.

5. Google Pixel - Wikipedia

   en.wikipedia.org/wiki/Google_Pixel

   Google Pixel is a brand of portable consumer electronic devices developed by Google that run either ChromeOS or the stock version of the Android operating system.The main line of Pixel products consist of Android-powered smartphones, which have been produced since October 2016 as the replacement of the older Nexus, and of which the Pixel 9, Pixel 9 Pro and Pixel 9 Pro XL are the current models.

6. Touchscreen - Wikipedia

   en.wikipedia.org/wiki/Touchscreen

   Self-capacitive touch screen layers are used on mobile phones such as the Sony Xperia Sola, [103] the Samsung Galaxy S4, Galaxy Note 3, Galaxy S5, and Galaxy Alpha. Self-capacitance is far more sensitive than mutual capacitance and is mainly used for single touch, simple gesturing and proximity sensing where the finger does not even have to ...

7. Vivo (technology company) - Wikipedia

   en.wikipedia.org/wiki/Vivo_(technology_company)

   The IMEI number is a 15-digit code meant to be unique to every mobile device communication administration, that may be used for tracking criminals or stolen mobile phones. By using the same IMEI number for multiple devices, Vivo could have hampered police tracking of criminals or stolen devices.