Samsung Galaxy A51 Vs Xiaomi Redmi K30 (Poco X2): Which One to Buy?

Samsung Galaxy A51 Vs Xiaomi Redmi K30 (Poco X2)

If you are confused about these 2 smartphones then this article is for you. We have compared these smartphones in depth.

Samsung A51Poco X2
Solid build, great finish. Android 10. Can handle high-end games like PUBG well.Great performance. 120Hz display is great. Headphone jack. Expandable storage. Versatile camera set. Affordable. Fast 27W charging.
Some One UI 2.0 features missing. Speaker could have been better. Limited usability for the macro camera.LCD display. Software is hard to use in the West. Camera quality is just ok.


TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
SpeedHSPA, LTE-AHSPA 42.2/5.76 Mbps, LTE-A
Announced2019, December2020, February 4
StatusAvailable. Released 2019, DecemberAvailable. Released 2020, February 11
Dimensions158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)165.3 x 76.6 x 8.8 mm (6.51 x 3.02 x 0.35 in)
Weight172 g (6.07 oz)208 g (7.34 oz)
SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
TypeSuper AMOLED capacitive touchscreen, 16M colorsIPS LCD capacitive touchscreen, 16M colors
Size6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio)6.67 inches, 112.5 cm2 (~88.8% screen-to-body ratio)
Resolution1080 x 2400 pixels, 20:9 ratio (~405 ppi density)1080 x 2400 pixels, 20:9 ratio (~386 ppi density)
OSAndroid 10.0; One UI 2Android 10.0; MIUI 11
ChipsetExynos 9611 (10nm)Qualcomm SDM730 Snapdragon 730G (8 nm)
CPUOcta-core (4×2.3 GHz Cortex-A73 & 4×1.7 GHz Cortex-A53)Octa-core (2×2.2 GHz Kryo 470 Gold & 6×1.8 GHz Kryo 470 Silver)
GPUMali-G72 MP3Adreno 618
Card slotmicroSDXC (dedicated slot)microSDXC (uses shared SIM slot)
Internal64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
Modules48 MP, f/2.0, 26mm (wide), 1/2.0″, 0.8µm, PDAF

12 MP, f/2.2, 12mm (ultrawide)

5 MP, f/2.4, 25mm (macro), 1/5.0″, 1.12µm

5 MP, f/2.2, (depth)
64 MP, f/1.9, 26mm (wide), 1/1.7″, 0.8µm, PDAF

8 MP, f/2.2, 13mm (ultrawide), 1/4.0″, 1.12µm

2 MP, f/2.4, (macro), 1/5.0″, 1.75µm

2 MP, f/2.4, (depth)
FeaturesLED flash, panorama, HDRDual-LED flash, HDR, panorama
Video2160p@30fps, 1080p@30/60/120fps; gyro-EIS2160p@30fps, 1080p@30/120fps, 720p@960fps; gyro-EIS
Modules32 MP, f/2.2, 26mm (wide), 1/2.8″, 0.8µm20 MP, f/2.2, 27mm (wide), 1/3.4″, 0.8µm

2 MP, f/2.4, 1/5″, 1.75µm, depth sensor
3.5mm jackYesYes
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
Infrared port
USB2.0, Type-C 1.0 reversible connector, USB On-The-Go2.0, Type-C 1.0 reversible connector, USB On-The-Go
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
BatteryNon-removable Li-Po 4000 mAh batteryNon-removable Li-Po 4500 mAh battery
ColorsPrism Crush Black, White, Blue, PinkAtlantis Blue, Matrix Purple, Phoenix Red


Samsung A51:

My first impressions of the phone was how light that it felt in my hands the moment I unboxed the phone. Then at the back it’s made of plastic with a glass-like finish, but the phone wasn’t slippery at all.

Then looking at the back, there is four cameras at the back with the flash, with the brand new square camera design similar like the Note 10 Lite.

Then the front has a flat-screen design with the hole-punch, which is known as the Infinity-O Display which was first introduced by the Note 10 series. And it is nice that they brought it into this mid-range market as well.

Redmi K30 (Poco X2):

I am not particularly impressed with the Poco X2 design. But I can live with this for sure.

This phone is a little big and it’s also pretty hefty and this is also one of the most slipperiest phone I’ve ever used. But I wouldn’t say that “I have disliked using this one”, I think it’s fine.

I think the A51 looks better but yeah this design isn’t really a deal-breaker.

One unique thing about this design is the side mounted fingerprint scanner, something that’s pretty rare but I like it on the poco x2.

A51 vs Poco X2 - 1


Samsung A51:

The Galaxy A51 quad cameras are probably as big as change from last year’s model.

  • 48 Megapixel (f/2.0, Main Camera)
  • 12 Megapixel (f/2.2 Ultra-Wide)
  • 5 Megapixel (f/2.4 Macro)
  • Depth Sensor
  • 32 Megapixel Selfie Camera (f/2.2)

In daylight, the main camera takes decent pictures. There’s good sharpness, wide dynamic range, low noise, and balanced colors. You can shoot in the full 48 megapixels too but these don’t give you much benefit and the file size is much larger.

The ultra wide-angle camera is quite capable for a mid-range sharpness and dynamic range are both quite good.

Portraits taken with the main camera and depth sensor are really good too. The defocus background blur looks nice.

The dedicated macro camera has fixed focus, so it’s a pain to get your subject in the focus. If you get that right the results can be pretty decent.

Under low-light photos, unfortunately these aren’t good. They’re soft and noisy with washed out colors. Dynamic range is decent for what it’s worth. Night mode gives you a sharper image with better definition in the shadows. The color rendition is the same though and these come out cropped at 8 megapixels.

The A51 has a 32 megapixel selfie camera and you’d expect eight megapixel photos but for some reason they come out in 12 megapixels instead. Selfies turn out good with nice colors.

Redmi K30 (Poco X2):

This phone also comes with Quad camera setup.

  • 64 Megapixel (f/1.9, Main Camera)
  • 8 Megapixel (f/2.2, Ultra-Wide)
  • 2 Megapixel (f/2.4, Macro)
  • Depth Sensor

The main camera saves 16 megapixel photos and in daylight quality is excellent. Images have plenty of detail great contrast and wide dynamic range. You can shoot in the full 64 megapixel resolution and photos have impressive detail and dialed down sharpening. However, these shots are slow to save and each has a huge file size.

The ultra-wide camera snaps good pictures with enough detail and nice contrast. The dynamic range is rather limited but images are still very good for this price range.

Portrait shots are taken with a main camera and the depth sensor. They’re very detailed.

2 megapixel macro camera has autofocus, unlike the majority of the macro shooters out there. The close-ups we took are actually pretty nice.

A51 vs Poco X2 - 2


Samsung A51:

One thing I love about the display is the punch-hole camera which is smaller than Note 10. Because of this tiny punch-hole, the bezel looks thinner but of course, you get the bottom chin.

The quality of the display is amazing. This Amoled panel have good black spots and you also get the support of widevine L1. Overall, the viewing angles of this phone is amazing.

Redmi K30 (Poco X2):

I like this Poco X2 6.67 inch display. Obviously, the big highlight of the Poco X2, the 120 Hertz IPS LCD display. Now if I tell you frankly, I would have preferred AMOLED instead of the IPS LCD but this is also a good display.

It’s decently bright outdoors, it’s sharp and this is a punch-hole which gives you bezelless experience.

Xiaomi has obviously optimized for the 120 Hertz display. So the experience is definitely nice. The Display does not have always on display because it is LCD.


Samsung A51:

Speaker volume is definitely satisfactory for watching YouTube videos but it’s not great, I’m still gonna be bringing around my portable speaker. And I will recommend you to use headphones for better experience.

Redmi K30 (Poco X2):

The Poco X2 has a 3.5 millimeter audio jack and sound quality with headphones plugged in is just okay. Volume is below average and there is noticeable distortion. You do get FM radio though.

There’s one bottom firing loudspeaker and audio quality is decent at this price range.

A51 vs Poco X2 - 3


Samsung A51:

I don’t have any real proper complaints when it comes to the performance. Although the Samsung Galaxy A51 certainly is a super smooth smartphone.

The Exynos 9611 chipset is generally all right with your apps and media and even a bit of gaming on the side as well. You can even play PUBG on high detail settings with a reasonably consistent frame rates.

Redmi K30 (Poco X2):

Poco X2 is running on a Snapdragon 730G chipset, one of the best you can get on a mid-range phone. Performance is great here, especially for gaming. When compared to the A51, this phone will give you better performance because it has better chipset and more RAM.

A51 vs Poco X2 - 4


Samsung A51:

This device coming with OneUI 2.0 installed which features many quality of life improvements like the fingerprint sensor added to the always-on display, smoother animations when navigating through your device, my favourite personally being able to quickly switch over to previously use apps, and improvements to many apps you use every day for a more seamless user experience.

In addition, to some extra features like focus mode which can block apps to help you focus on getting some work done or to get a much-needed break from your phone.

Redmi K30 (Poco X2):

Poco X2 interface is MIUI 11 on top of Android 10. The new MIUI looks even more refined and minimalistic than previous versions.

You don’t have an app drawer here as you’d expect from Xiaomi but you can get one if you install a third-party launcher.

There’s a dark mode for your menus if you’re into that though for some reason it doesn’t work on all of the menus and it won’t save your battery since this is an LCD screen.



Samsung A51:

It’s got a 4000 mAh battery which is enough for it to last a full day without a breaking a sweat. You can easily go beyond one day of use, it depends on how extreme you use this phone but really it’s gonna last you a full day without any problem.

Redmi K30 (Poco X2):

The Poco X2 battery capacity is 4500 mAh, 500 more than the A51. Poco X2 scored great endurance rating of 101 hours in our proprietary tests but after switching the screen to a 60 Hertz refresh rate the score jumped up to an excellent 114 hours.

The Poco X2 comes with a 27 Watt fast charger in the box which is able to take the phone from 0 to 56% in half an hour.


If you want a Amoled display, good seflie camera, and in-display fingerprint sensor then you should buy the A51. But if you just care about performance or heavy gaming then I will recommend you to buy Poco X2.

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