Information about additional software and hardware features of the rear camera which improve its overall performance. 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. Budget smartphones hardly push the boundaries in terms of design but the Nokia C21 is better than most. The color depth of the display is also known as bit depth. It shows the number of bits used for the color components of one pixel. Information about the maximum number of colors the screen can display.

While I know the benchmarks I logged aren’t pulling up any trees, the key thing is that Nokia has also realised this. As a result, it has skipped putting the full-fat version of Android on the C21 Plus and opted for the much more lightweight (and less bloated) Android 11 Go.

Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation. 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.

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.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 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 the process technology used in manufacturing the chip. The value in nanometers represents half the distance between elements that make up the CPU.

One of the main characteristics of the display is its type/technology, on which depends its performance.

Display

Display The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. Type/technology Information about the height, i.e. the vertical side of the device when it is used in its standard orientation. CPU is the Central Processing Unit or the processor of a mobile device. Its main function is to interpret and execute instructions contained in software applications. Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped. Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications.