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. Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications. 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. 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. 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.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. 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.

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. Information about the width, i.e. the horizontal 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.

Colours

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. Display The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. Type/technology 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. The Nokia C21 Plus has a large 6.52in 720p IPS display and a dual-camera array. A Unisoc SC9863A processor runs the show, alongside 2GB of RAM, 32GB of expandable storage and a 4,000mAh battery. It uses a specially tailored version of Android for low-power devices, called Android 11 Go, with Nokia promising up to two years of core Android upgrades as well. Nokia C21 Plus review: Price and competition

Nokia C21 Plus mobile was launched on 27th February 2022. The phone comes with a 6.52-inch touchscreen display offering a resolution of 720x1600 pixels and an aspect ratio of 20:9. Nokia C21 Plus is powered by an octa-core Unisoc SC9863A processor. It comes with 2GB, 3GB, 4GB of RAM. The Nokia C21 Plus runs Android 11 (Go edition) and is powered by a 4000mAh battery. Information about the sensor type of the camera. Some of the most widely used types of image sensors on mobile devices are CMOS, BSI, ISOCELL, etc. The Nokia C21 Plus runs Android 11 Go Edition, which is a tailored version of Google’s mobile OS specifically designed for low-end devices. What this means is that the phone launches with tweaked ‘Go’ versions of Google’s applications, such as Chrome, Maps and Gmail. Networks A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other. GSM 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.Connectivity options on the Nokia C21 Plus include Wi-Fi 802.11 b/g/n, GPS, Bluetooth v4.20, USB OTG, Micro-USB, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, proximity sensor, and fingerprint sensor. One of the main characteristics of the display is its type/technology, on which depends its performance.