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User-replaceable [7] Samsung J7 form-factor 3000mAh battery. Phillips-head screws. [1] I2C pogo pins, back mods can be added (all compatible with original PinePhone). USB 3.0. Bootable from a microSD card. Good parts availability. [6] [1] GPS and modem on same kill switch; neither can be used while the other is airgapped. [1] entire phone can ...
Open QTMoko/OpenMoko phones of Qt Extended are included to the list. Note that it is often possible to install a wide variety of open-source operating systems on any open-source phone; the higher-level software is designed to be largely interchangeable and independent of the hardware. [16]
The iPhone [5] (retroactively referred to as the iPhone 2G [6] or iPhone 1 [7]) is the first iPhone model and the first smartphone developed and marketed by Apple Inc. After years of rumors and speculation, it was officially announced on January 9, 2007, [8] and was released in the United States on June 29, 2007.
The Samsung SGH-A561, also known as Samsung A746, is a flip open or folding mobile phone released by Samsung corporation in August 2008. It has both 2G (GSM 850 / 900 / 1800 / 1900) and 3G network (HSDPA 850 / 1900) as well as EDGE for faster internet access.
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.
2G (or 2-G) provides three primary benefits over their predecessors: phone conversations are digitally encrypted; 2G systems are significantly more efficient on the spectrum allowing for far greater mobile phone penetration levels; and 2G introduced data services for mobile, starting with SMS (Short Message Service) plain text-based messages. 2G technologies enable the various mobile phone ...
2G also introduced the ability to access media content on mobile phones. In 1998, the first downloadable content sold to mobile phones was the ring tone, launched by Finland's Radiolinja (now Elisa). Advertising on the mobile phone first appeared in Finland when a free daily SMS news headline service was launched in 2000, sponsored by advertising.
2G, or second-generation cellular network technology, marks the transition from analog to digital communication in mobile networks. Defined by the European Telecommunications Standards Institute (ETSI) under the GSM standard, which became the first globally adopted framework for mobile communications, 2G was first commercially launched in 1991 by Radiolinja (now part of Elisa Oyj) in Finland. [1]