Samsung has quite a wide range of smartphones in different segments. For example, the well-known Galaxy S series smartphones can be found and, for example, the cheaper Galaxy A series with different smartphones in various prices.
Galaxy S-serie
The Galaxy S series includes all Samsung phones from the higher segment with a sleek, borderless design and excellent high-end hardware.
Galaxy A-series
The Galaxy A series is aimed at the middle class and budget devices. With the A series, Samsung focuses mainly on the cheaper to middle class segment. The lower the number in the series, the cheaper the price. Examples of smartphones are the Galaxy A10, A20 and A80. With every number up, the smartphones become slightly larger and more powerful in terms of specifications. A big advantage is that this makes a diverse range available for almost everyone, including smartphones for different price ranges. 
Entry copies
The entry-level models are Samsung’s Galaxy A10 and A20e. These are comparable to the first J series from Samsung. The entry-level models are equipped with reasonable hardware and are mainly intended for daily use. Of course you do not have the high-end cameras and extremely fast chipsets with new techniques, but for daily use these devices are more than fine.
Popular
The A series series from Samsung is quite popular and are one of the best-selling smartphones from Samsung. In 2019, the Galaxy A50 was the best-selling smartphone in Europe. For this year, the A51 is the best-selling smartphone. The biggest advantage of the A series is the good specifications for a competitive price.
Galaxy A51
Of Samsung Galaxy A51 is the successor to the Galaxy A50 and has interesting hardware. Just like the predecessors, the Galaxy A51 has many specifications, which can also be found in the more expensive segment, such as a fingerprint scanner under the screen, a large battery and four cameras at the rear. The design is also equivalent compared to the high-end competition.
Samsung has equipped the A51 with four cameras. It is a primary camera of 48 megapixel, 12 megapixel camera for wide-angle photos, 5 megapixel depth sensor and a 5 megapixel macro camera.
With a 6.5-inch screen and a resolution of 2400 by 1080 pixels, the quality is more than fine. Compared to the A series, the difference is mainly visible from the chipset. Under the hood there is an Exynos 9611 chip with 4GB of RAM and 64GB of storage. With this, the smartphone is mainly aimed at the middle segment.
The smartphone is available for an amount of 279.00 euros. Especially compared to the high-end smartphones, this is quite a big difference.
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