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2. List of best-selling mobile phones - Wikipedia

   en.wikipedia.org/wiki/List_of_best-selling...

   This is a list of best-selling mobile phones. The best-selling mobile devices are the bar phone Nokia 1100 and Nokia 1110, released in 2003 and 2005, respectively. Both models have sold over 250 million units. The best-selling touchscreen phones are the Apple iPhone 6 and 6 Plus, both released in 2014. Together, they have sold over 222 million ...

3. Cellular frequencies - Wikipedia

   en.wikipedia.org/wiki/Cellular_frequencies

   In Russia and some other countries, local carriers received licenses for 450 MHz frequency to provide CDMA mobile coverage area. 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 ...

4. iPhone - Wikipedia

   en.wikipedia.org/wiki/IPhone

   The iPhone was the first mobile phone to use multi-touch technology. [3] Since the iPhone's launch, it has gained larger screen sizes, video-recording, waterproofing, and many accessibility features. Up to the iPhone 8 and 8 Plus, iPhones had a single button on the front panel, with the iPhone 5s and later integrating a Touch ID fingerprint ...

5. Stingray phone tracker - Wikipedia

   en.wikipedia.org/wiki/Stingray_phone_tracker

   Cell phones are programmed to constantly search for the strongest signal emitted from cell phone towers in the area. Over the course of the day, most cell phones connect and reconnect to multiple towers in an attempt to connect to the strongest, fastest, or closest signal.

6. Stingray use in United States law enforcement - Wikipedia

   en.wikipedia.org/wiki/Stingray_use_in_United...

   The use of stingrays by United States law enforcement is an investigative technique used by both federal and local law enforcement in the United States to obtain information from cell phones by mimicking a cell phone tower.

7. List of open-source mobile phones - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_mobile...

   Mobile/desktop convergence: the Librem 5 open-source mobile, when connected to a keyboard, screen, and mouse, runs as a desktop computer. This is a list of mobile phones with open-source operating systems.