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 format Information about the height, i.e. the vertical side of the device when it is used in its standard orientation. 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. 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.

Design Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications. Width Samsung Galaxy A21s is a mid-range Android smartphone designed, developed, marketed, and manufactured by Samsung Electronics as part of its Galaxy A series.Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications. This Samsung smartphone gives the user 3GB / 4GB / 6GB of RAM. Where the Android Operating System is running, In addition to the user applications and games. And for the storage space it has 32GB / 64GB of internal storage and Up to 512GB of external memory via microSD card. In August 2021, It was revealed that Samsung had sold over 10 million units of the Samsung Galaxy A21s.

Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation. 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 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.The SAR head rating shows the highest level of exposure to electromagnetic radiation measured when the device is held next to the ear in a talk position. In Europe, the SAR limit for hand-held mobile devices is set to 2 W/kg per 10 g of tissue. This standard is specified by the CENELEC, complies with the IEC standards and follows the ICNIRP Guidelines 1998. The Samsung Galaxy A21s has a four camera setup arranged in an "L" shape located in the corner with a rectangular protrusion similar to that of the iPhone 11 and the Pixel 4. The array consists of a 48 MP wide angle camera, an 8 MP ultrawide camera, a 2 MP macro camera, and a 2 MP depth sensor. [3] It also has a single 13 MP front facing camera, which sits in a small punch hole on the front of the screen. The rear facing cameras can record video up to 1080p in 30 fps. The front cameras can shoot 1080p at 30 fps. [4] Software [ edit ] The Galaxy A21s has a 6.5" PLS TFT LCD Infinity O display with HD+ 720 x 1600 resolution, 20:9 aspect ratio, ~270 ppi density. The phone itself measures 163.7mm (6.44in) x 75.3mm (2.96in) x 8.9mm (0.35in) and weighs 192g (6.8oz). The phone is powered by Exynos 850 (8 nm) SoC ( System on a chip) with a octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55) CPU and a Mali-G52 GPU. The phone comes with either 4GB or 6GB RAM as well as 64GB or 128GB internal storage, which can be expanded via a microSD card of up to 512GB. It comes with a non-removable 5000mAh lithium polymer battery which charges with a 15W Fast Charger. It also has a rear-mounted fingerprint sensor. [1] Cameras [ edit ] Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped. Pixels are usually measured in microns (μm). Larger ones are capable of recording more light, hence, will offer better low light shooting and wider dynamic range compared to the smaller pixels. On the other hand, smaller pixels allow for increasing the resolution while preserving the same sensor size.