Samsung has been trying to give a real tough fight to Xiaomi and Realme in the mid range segment with its M and A series smartphones. Samsung Galaxy A21s is another attempt to gain market share in this segment. Lets review this smartphone on a few important parameters:-
Design - Unsurprisingly, this smartphone also comes with the typical Samsung design which you can find on a majority of other Samsung phones. However, its quite light weight and the one hand feel seems to be good.
Display - The phone comes with a 6.5 inch HD+ display, not something you expect in this price segment. If not AMOLED, consumers do expect a FHD+ screen with atleast 90Hz refresh rate in this price segment.
Camera - Samsung phones generally do have a good camera setup and processing, this one too does not disappoint as well in this regard. It comes with a 48+8+2+2MP quad rear camera setup with a 13MP decent selfie snapper. So a big thumbs up on the cameras.
Performance - You do not expect a strong processor when it comes to Samsung mid range phones and this one is no different. It comes with Exynos 850 processor which kind of feels okay but no where near what competition is providing.
Battery - You do not expect something spectacular from Samsung in the battery department either - 5000mah with just 15W fast charging(you dont call 15W as fast nowadays).
So my simple conclusion on this phone after using it for a few days would be clear - If you are someone who is a die hard Samsung fan with a tight budget and you require a daily driver for just performing day to day tasks, then this is a good choice for you or else there are many other good options available in the market.
I hope this explanation will help you in making the correct decision.