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Dual SIM
Some mobile phones support use of two SIM cards, described as dual SIM operation. When a second SIM card is installed, the phone either allows users to switch between two separate mobile network services manually, has hardware support for keeping both connections in a "standby" state for automatic switching, or has individual transceivers for maintaining both network connections at once. Dual SIM phones are mainstream in many countries where phones are normally sold unlocked. Dual SIMs are popular for separating personal and business calls, in locations where lower prices apply to calls between clients of the same provider, where a single network may lack comprehensive coverage, and for travel across national and regional borders. In countries where dual SIM phones are the norm, people who require only one SIM simply leave the second SIM slot empty. Dual SIM phones will usually have two unique IMEI numbers, one for each SIM slot. Devices that use more than two SIM cards have also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lenovo A369i Dual SIM Slots
Lenovo Group Limited, often shortened to Lenovo ( , ), is a Chinese multinational technology company specializing in designing, manufacturing, and marketing consumer electronics, personal computers, software, business solutions, and related services. Products manufactured by the company include desktop computers, laptops, tablet computers, smartphones, workstations, servers, supercomputers, electronic storage devices, IT management software, and smart televisions. Its best-known brands include its ThinkPad business line of laptop computers (acquired from IBM), the IdeaPad, Yoga, and Legion consumer lines of laptop computers, and the IdeaCentre and ThinkCentre lines of desktop computers. As of 2021, Lenovo is the world's largest personal computer vendor by unit sales. Lenovo was founded in Beijing on 1 November 1984 as Legend by a team of engineers led by Liu Chuanzhi and Danny Lui. Initially specializing in televisions, the company migrated towards manufacturing and marke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Mobile Communications
Sony Mobile Communications Inc. ( ja, ソニーモバイルコミュニケーションズ株式会社) was a multinational telecommunications company founded on October 1, 2001, as a joint venture between Sony Group Corporation and Ericsson. It was originally incorporated as Sony Ericsson Mobile Communications, and headquartered in London, England, until Sony acquired Ericsson's share in the venture on February 16, 2012. On April 1, 2021, Sony integrated its electronics businesses including Sony Mobile into one company called Sony Corporation. Prior to April 1, 2021, Sony Mobile exclusively created Android-powered smartphones under the Xperia sub-brand name; it also developed tablet computers ( Sony Tablet), smartwatches (Sony SmartWatch) and fitness trackers (Sony SmartBand), alongside accessories and software for the devices. Sony Mobile had research and development facilities in Lund, Sweden; Beijing, China; Tokyo, Japan; and San Francisco, United States. At its peak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time-division Multiplexing
Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern. This method transmits two or more digital signals or analog signals over a common channel. It can be used when the bit rate of the transmission medium exceeds that of the signal to be transmitted. This form of signal multiplexing was developed in telecommunications for telegraphy systems in the late 19th century, but found its most common application in digital telephony in the second half of the 20th century. History Time-division multiplexing was first developed for applications in telegraphy to route multiple transmissions simultaneously over a single transmission line. In the 1870s, Émile Baudot developed a time-multiplexing system of multiple Hughes telegraph machines. In 1944, the British ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Inc
Apple Inc. is an American multinational technology company headquartered in Cupertino, California, United States. Apple is the largest technology company by revenue (totaling in 2021) and, as of June 2022, is the world's biggest company by market capitalization, the fourth-largest personal computer vendor by unit sales and second-largest mobile phone manufacturer. It is one of the Big Five American information technology companies, alongside Alphabet, Amazon, Meta, and Microsoft. Apple was founded as Apple Computer Company on April 1, 1976, by Steve Wozniak, Steve Jobs and Ronald Wayne to develop and sell Wozniak's Apple I personal computer. It was incorporated by Jobs and Wozniak as Apple Computer, Inc. in 1977 and the company's next computer, the Apple II, became a best seller and one of the first mass-produced microcomputers. Apple went public in 1980 to instant financial success. The company developed computers featuring innovative graphical user inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Xperia Tipo
The Sony Xperia tipo is a mid-range Android smartphone manufactured by Sony Mobile Communications. The device was released globally during August 2012. There is a dual-SIM version of the Xperia tipo available in certain countries known as the Xperia tipo dual. Availability The phone was officially announced with the Sony Xperia miro by Sony Mobile Communications on 13 June 2012 and was officially released worldwide during August 2012. The Xperia tipo was available in Classic Black, Classic White, Deep Red and Navy Blue while the Xperia tipo dual was only available in Classic Black and Silver. Hardware The device measures 103 by 57 by 13 mm and weighs 99.4 grams. It features a capacitive touchscreen display which measures 3.2 inches with a resolution of 320 x 480 pixels at 180 ppi with multitouch support and is capable of displaying 262,000 colours. The glass of the display is made from plastic. The camera of the device has 3.2 megapixels capable of 4x digital zoom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Xperia C
The Sony Xperia C is a touchscreen enabled Android smartphone designed, developed and manufactured by Sony Mobile Communications. Unveiled at the Mobile Asia Expo held in Shanghai, China in June 2013, the phone was targeted at the Chinese market. It was released in July 2013. Despite its limited release in countries and regions, Xperia C managed to sell very well, having shipped one million units in the first 3 months since it availability. A successor, the Sony Xperia C3, was announced in July 2014. It was released in August 2014. Design Similar to the Sony Xperia Z, the Xperia C has a rectangular build with a "Omni-Balance" design, according to Sony, which is focused on creating balance and symmetry in all directions. The Xperia C has subtle rounded edges and instead of a glass chassis, it features a soft-touch back cover that completely envelops the sides and back. Similar to Sony Ericsson Xperia Arc the back of the Xperia C slightly curved which tapers down to being thinn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Xperia Z3
The Sony Xperia Z3 is an Android smartphone produced by Sony. Part of the Sony Xperia Z series, the Xperia Z3, at that point known by the project code name "Leo", was unveiled during a press conference at IFA 2014 on September 4, 2014. It was first released in Taiwan on September 19, 2014. Specifications Hardware Like its predecessors, the Xperia Z3's design consists of a metal frame with a glass backing; the metal frame has been rounded, and the device itself is slightly slimmer than the Z2. The device carries slightly higher IP ratings for water and dust-proofing than the Z2. The device features a (marketed as 5.2-in) 1080p display with a density of 424 ppi, featuring Sony's "Triluminos" technology. The device features a 2.5 GHz quad-core Qualcomm Snapdragon 801 system-on-chip with 3 GB of RAM. The Z3 includes a non-removable 3100 mAh battery. The Xperia Z3's rear-facing camera is 20.7 megapixels with a Sony Exmor RS image sensor, along with improvements to its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung Galaxy Duos
The Samsung Galaxy (stylized as Samsung GALAXY) is a series of Android (operating system), Android-powered mobile computing devices designed, manufactured, and marketed by Samsung Electronics; including Dual SIM Smartphone, SmartPhones marketed as Duos. Range The Samsung Galaxy offers several different ranges of devices, including Smartphones, Phablets, Tablet computer, Tablets. Although widely known by marketing names, the underlying model ranges are best understood by looking at the model number. Since August 2011, all the smartphones of the Galaxy series are categorized in the following way: Phone unlock itself now 19:50 *GT-x5nnn - Budget ("Realistic ") devices *GT-x7nnn - Mid-range ("Slim") devices *GT-x8nnn - Upper mid-range ("Loyal") devices *GT-x9nnn - High end ("Clever ") devices where x = I, N or S and nnn = model number Within the Smartphone ranges, Samsung often produces a Dual SIM variant, but these on not often widely available in many markets where retail dominan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia X
The Nokia X was a mid-tier smartphone announced as part of the Nokia X family in February 2014, running on the Nokia X platform. The device shipped on the same day as the unveiling, with Nokia targeting the product for emerging markets, and was sold and maintained by Microsoft Mobile. On 17 July 2014, Microsoft announced that it would discontinue the line. The X was previously under development known as Normandy, Project N, the Asha on Linux project and MView. Unveiling The phone was unveiled by Stephen Elop at the 2014 Mobile World Congress, Barcelona on 24 February 2014. Contrary to previous leaks, two variants, Nokia X and Nokia X+ were released, with the Nokia X+ having 768 MB of RAM, as opposed to 512 MB of RAM, as well as with a microSD card included in the box. A third phone, the Nokia XL, was announced, with a larger screen, front-facing camera, rear flash, and longer battery runtime. Very soon after release, a developer had rooted the device, and enabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
