Display The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. Type/technology

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. 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 manufacturer and model of the image sensor used by this camera of the device. Information about additional software and hardware features of the rear camera which improve its overall performance.

W-CDMA (Wideband Code Division Multiple Access) is an air interface used by 3G mobile networks. It is one of the three different UMTS interfaces together with the TD-SCDMA and the TD-CDMA. The standard provides faster data transfer speeds and allows more users to connect to the network simultaneously. 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. Budget smartphones hardly push the boundaries in terms of design but the Nokia C21 is better than most. 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. 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.Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications. Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation. Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped. Finally, video is captured at 1080p and 30fps, up from the 720p limit on the Nokia 1.4. Footage looks good for the most part but there’s no image stabilisation so you’ll have to be careful to hold your phone still when recording. Nokia C21 Plus review: Verdict