The aperture (f-stop number) indicates the size of the lens diaphragm opening, which controls the amount of light reaching the image sensor. Some of the most widely used types of image sensors on mobile devices are CMOS, BSI, ISOCELL, etc. Information about the sensor type of the camera. Rear camera The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras. Information about other functions and features of the display. Information about the maximum number of colors the screen can display. It shows the number of bits used for the color components of one pixel. The color depth of the display is also known as bit depth. The higher the pixel density, the more detailed and clearer is the information displayed on the screen. Information about the number of pixels per centimeter (ppcm) or per inch (ppi) of the display. The higher the resolution is, the greater the detail of the displayed content. The display resolution shows the number of pixels on the horizontal and vertical side of the screen. The ratio between the long and the short side of the display In mobile devices display size is represented by the length of its diagonal measured in inches. One of the main characteristics of the display is its type/technology, on which depends its performance. RAM frequency relates directly to the rate of reading/writing from/in the RAM memory.ĭisplay The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. More channels mean higher data transfer rates. Information about the number of RAM channels integrated in the SoC. Information about the type of RAM used by the device. Data in the RAM is lost after the device is turned off or restarted. RAM (Random-Access Memory) is used by the operating system and all installed applications. The frequency is the clock rate of the graphic processor (GPU), which is measured in Megahertz (MHz) or Gigahertz (GHz). GPU can also perform computation in applications traditionally handled by the CPU. In mobile devices GPU is usually utilized by games, UI, video playback, etc. GPU is a graphical processing unit, which handles computation for 2D/3D graphics applications. It is measured in Megahertz (MHz) or Gigahertz (GHz). The frequency of the processor describes its clock rate in cycles per second. They increase the performance of the device allowing the execution of multiple instructions in parallel. Presently, besides single-core processors, there are dual-core, quad-core, hexa-core and so on multi-core processors. Information about the set of instructions the processor can execute.Ī CPU core is the processor unit, which executes software instructions. The instruction set architecture (ISA) is a set of commands used by the software to manage the CPU's work. 64-bit CPUs provide better performance than 32-bit ones, which on their part perform better than 16-bit processors. The CPU bits are determined by the bit-size of the processor registers, address buses and data buses. Its main function is to interpret and execute instructions contained in software applications.Ĥx 1.4 GHz ARM Cortex-A53, 4x 1.61 GHz ARM Cortex-A53 The value in nanometers represents half the distance between elements that make up the CPU.ĬPU is the Central Processing Unit or the processor of a mobile device. Information about the process technology used in manufacturing the chip. The SoC integrates different hardware components such as the CPU, GPU, memory, peripherals, interfaces, etc., as well as software for their functioning. System on Chip (SoC) A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device. A further development of the technology is called LTE Advanced. It has been developed by the 3GPP based on the GSM/EDGE and UMTS/HSPA technologies in order to increase the speed and capacity of wireless data networks. LTE is deemed to be the fourth generation (4G) of mobile communications technology. The standard provides faster data transfer speeds and allows more users to connect to the network simultaneously. It is one of the three different UMTS interfaces together with the TD-SCDMA and the TD-CDMA. W-CDMA (Wideband Code Division Multiple Access) is an air interface used by 3G mobile 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. 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.
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