LTE is deemed to be the fourth generation (4G) of mobile communications technology. It has been developed by the 3GPP and its major advantage is the provision of greater bandwidth and spectral efficiency, due to the W-CDMA technology. Based on the GSM standard, it is deemed as a 3G mobile network standard. UMTS stands for Universal Mobile Telecommunications System. It is developed as an alternative to the W-CDMA standard in China by the Chinese Academy of Telecomunications Technology, Datang Telecom and Siemens AG, and combines TDMA and CDMA. TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G standard for mobile networks. Its advantages include stronger signal, fewer drop-offs and breakups, analog capabilities, very high spectral capacity, etc. Compared to other 2G and 2.5G standards like GSM and TDMA, it provides increased data transfer speeds and allows more subscribers to connect simultaneously to the network.ĬDMA2000 is a family of 3G standards for mobile networks based on CDMA and providing high-quality voice and broadband data services over wireless networks. It has been improved with the addition of General Packet Radio Services (GPRS) and later via the Enhanced Data rates for GSM Evolution (EDGE) technology.ĬDMA (Code-Division Multiple Access) is a channel access method for communications within mobile networks. GSM (Global System for Mobile Communications) was developed to replace the analog cellular network (1G), therefore it is referred to as a 2G mobile network. Networks A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other. Information about the standards, in which the device is certified. Materials used in the fabrication of the device's body. Information about the colors, in which the device is available in the market. Applies for devices in the form of a rectangular parallelepiped. Information about the weight of the device in different measurement units.Įstimated volume of the device, calculated from the dimensions provided by the manufacturer. Information about the thickness/depth of the device in different measurement units. the vertical side of the device when it is used in its standard orientation. the horizontal side of the device when it is used in its standard orientation. Body materials, available colors, certifications. The Super Retina XDR display features a 6.7-inch OLED screen with a 2,000,000:1 contrast ratio and a resolution of 2778 x 1284 at 458ppi.Design Information about the dimensions and weight of the device, shown in different measurement units. The stainless steel case is available in 4 different color finishes: Pacific blue, gold, silver, and graphite. dual in standard models) with ultra wide, wide, and telephoto lens, along with a LiDAR sensor for recording distance. The Pro version features a rear-facing triple camera system (vs. The updated Lightning connector supports faster charging though USB-C. The wireless changing coil inside the phone includes MagSafe for magnetic alignment and attachment of chargers and accessories. It supports 5G networks for improved speed (up to 4Gbps) with the ability to automatically switch to LTE as needed to conserve battery life. Like the rest of the iPhone 12 line, it is powered by the six-core Apple A14 processor and features Ceramic Shield on the front screen and back panel for 4x improved drop performance over previous models.
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