Information about additional software and hardware features of the rear camera which improve its overall performance. Networks A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other. GSM Battery time is based on our own laboratory measurements, and may vary depending on factors such as device settings, usage patterns and operating conditions. RAM (Random-Access Memory) is used by the operating system and all installed applications. Data in the RAM is lost after the device is turned off or restarted.

Information about additional software and hardware features of the front camera which improve its overall performance. Information about the number of pixels per centimeter (ppcm) or per inch (ppi) of the display. The higher the pixel density, the more detailed and clearer is the information displayed on the screen.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. SoC This is a graded product. A1 products are "as new" but have been box opened. All A1 products will be fully bubble-wrapped for transportation. The rear cameras of mobile devices use mainly a LED flash. It may arrive in a single, dual- or multi-light setup and in different arrangements.

One of the main characteristics of the cameras is their image resolution. It states the number of pixels on the horizontal and vertical dimensions of the image, which can also be shown in megapixels that indicate the approximate number of pixels in millions. Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped. A CPU core is the processor unit, which executes software instructions. Presently, besides single-core processors, there are dual-core, quad-core, hexa-core and so on multi-core processors. They increase the performance of the device allowing the execution of multiple instructions in parallel. The aperture (f-stop number) indicates the size of the lens diaphragm opening, which controls the amount of light reaching the image sensor. The lower the f-stop number, the larger the diaphragm opening is, hence, the more light reaches the sensor. Usually, the f-stop number specified is the one that corresponds to the maximum possible diaphragm opening.Information about the process technology used in manufacturing the chip. The value in nanometers represents half the distance between elements that make up the CPU.

The display resolution shows the number of pixels on the horizontal and vertical side of the screen. The higher the resolution is, the greater the detail of the displayed content. Information about the number of pixels on the horizontal and vertical dimensions of the photos taken by the front camera, indicated in megapixels as well. Information about the manufacturer and model of the image sensor used by this camera of the device.Display The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. Type/technology One of the main characteristics of the display is its type/technology, on which depends its performance. Front camera Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc. Sensor model Information about the height, i.e. the vertical side of the device when it is used in its standard orientation.

The instruction set architecture (ISA) is a set of commands used by the software to manage the CPU's work. Information about the set of instructions the processor can execute.Network Band: The bandwidths supported by the device may vary depending on the region or service provider. Memory size - User memory is less than the total memory due to storage of the operating system and software used to operate the tablet features. Actual user memory will vary depending on the mobile phone operator and may change after software upgrades are performed.