Our Opinion

The Xiaomi Redmi K20 Pro (6GB RAM, 128GB) is a significantly better phone than the Samsung Galaxy A51 (6GB RAM), and is also significantly better value for money. What should you buy? Go for the Xiaomi Redmi K20 Pro (6GB RAM, 128GB)!

Samsung Galaxy A51 (6GB RAM)  Xiaomi Redmi K20 Pro (6GB RAM, 128GB) 
Samsung Galaxy A51 Xiaomi Redmi K20 Pro
Buy Now Buy Buy
Excellence Score
41.3
57.2
Value for Money Score
62.1
70.3
Price ₹ 22,879 onwards ₹ 22,999 onwards
Launch Date (India) Jan, 2020 Jul, 2019
Expected Launch Date N/A N/A
Smartphone OS Android 10Expected update to next Android version Android 9.0 Pie, Upgradeable to Android 10Expected update to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.5 inches 6.39 inches
Screen Resolution 1080x2400 pixels (~ 405 pixels per inch) 1080x2340 pixels (~ 403 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 3 Yes, Corning Gorilla Glass 5
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED HDR, Always-On Display
Full Physical QWERTY Keypad
Processor 2.3 GHz 2.84 GHz
Processor Type Octa Core Octa Core
Processor Name Samsung Exynos 9611Ranked #37 in Mobile Processor Benchmarks Qualcomm Snapdragon 855Ranked #9 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Adreno 640
RAM 6 GB 6 GB
3G Yes Yes
4G Yes Yes
5G
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port USB-C USB-C
Primary Camera 48MP + 12MP + 5MP + 5MP 48MP + 13MP + 8MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (Full HD) Yes (4K)
Other Camera Features 48MP: f/2.0 Aperture; 1/2" Sensor Size; 0.8um Pixel Size; PDAF, 12MP: f/2.2 Aperture; 13mm Focal Length (Ultra-wide), 5MP: f/2.4 Aperture; Dedicated Macro camera, 5MP: f/2.2 Aperture; Depth sensor, Panorama, HDR 48MP: F/1.75 Aperture; 26mm Focal Length (wide); 1/2" Sensor Size; 1.6um Pixel Size, 13MP: F/2.4 Aperture; 12mm Focal Length (ultrawide); 1/3" Sensor Size; 1.12um Pixel Size; 124.8° Wide-angle lens, 8MP: F/2.4 Aperture; 53mm Focal Length (telephoto); 1/4" Sensor Size; 1.12um Pixel Size; 2x Optical Zoom, Laser Focus + PDAF, HDR, Panorama, Portrait mode, Night More, Video: [email protected]/60fps; [email protected]/120/240fps; [email protected]
Secondary Camera 32MP 20MP
Secondary Camera Features f/2.2 Aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR Motorized Pop-up Camera, F/2.2 Aperture, 0.8um Pixel Size, HDR
Internal Memory 128 GB 128 GB
Expandable Memory Slot Yes, up to 512 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes Yes
Dual SIM GSM+GSM GSM+GSM
Thickness 7.9 mmMedium 8.8 mmMedium
Weight 172 gmMedium 191 gmHeavy
Width 73.6 mmOk for one-handed use 74.3 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 4000 mAh 4000 mAh
Battery Standby N/A N/A
Battery Standby (3G) N/A N/A
Battery Talktime N/A N/A
Battery Talktime (3G) N/A N/A
Fast Charging Support Yes, 15W Fast Charging Yes, 27W Quick Charge 4.0
Included Fast Charger Yes, 15.0W Fast Charger Yes, 18.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features In-display fingerprint sensor; NFC; ANT+ Support; Noise Filtration; Dolby Atmos In-display fingerprint sensor; Noise Filtration; Game Turbo 2.0; Hi-Fi DAC Audio; Hi-Res Audio
2-minute Review [Positives]
  • Stunning looks, similar rainbow-like effects at the back as the Galaxy A50s when caught against the light, and a prism-like pattern that Samsung calls a “3D prism design” - it's a head-turner no doubt
  • While it supports a polycarbonate back, it still manages to look premium
  • The front looks stylish and modern too with a single punch-hole in the upper middle of the display
  • Compact and light for the display size and battery capacity, at just 172g, and 7.9mm in thickness
  • Bright, large 6.5-inches Super AMOLED panel with a full-HD+ resolution - its punchy colours make it a joy to stream content, while games also look great on the panel because of its high colour accuracy
  • There's Widevine L1 support by default, which makes streaming content in HD possible
  • Comes with Android 10 out of the box - Samsung's One UI 2 is now one of the better, more clean and streamlined Android UIs around, and is well optimised for modern large displays (like this one)
  • Samsung has also added some neat features including a Game Booster and an intuitive gesture-based navigation system
  • Decent performance with the same Exynos 9611 processor as the Galaxy A50s (similar to Qualcomm Snapdragon 660/665) - the experience is fairly smooth throughout with games like PUBG Mobile and Asphalt 9
  • Decent quad camera setup at the back - a 48MP primary sensor + 12MP wide-angle camera + 5MP macro camera + 5MP depth sensor
  • Under good light, the Galaxy A51's primary camera managed to capture detailed shots with good dynamic range - images are reasonably sharp, noise is also competently removed, colours are generally nice, and the phone strikes a good balance with saturation
  • The ultra wide-angle cam is a significant upgrade from the one on the A50s, and it offers improved sharpness and detail - dynamic range is also substantially better, making for an altogether pretty capable ultra-wide camera as far as mid-rangers go
  • Macro camera turns out quite good close ups - you can get a lot closer to your subject when using the macro camera and the sensor picks up a fair bit of detail
  • Very good portrait mode ("Live focus") - image quality is good and the depth camera helps the Galaxy A51 do a decent job of edge detection
  • The front 32MP camera is decent and produces nice colours, the detail is quite good as far as selfie cameras go - portrait selfie mode is decent too
  • Decent video recording from both primary and wide cameras with dedicated 'super steady' mode which allows you to shoot decent “action” videos (though stabilisation is not available at 4K)
  • Decent bottom-firing speaker - sufficient for personal listening
  • Solid, dependent battery life from the 4000 mah battery - will easily manage to get a day and a half's worth of regular use
  • Reasonable 15W fast charging - charges 67 percent in an hour (though, not as quick as others in this segment such as the Redmi K20 Pro)
  • Overall, a decent and likeable smartphone from Samsung - offers a polished experience, a slim and light body, solid battery life, a crisp display, and of course the Samsung brand (though, the performance at this price is a letdown)
  • Xiaomi has gone big on the design front this time - the Redmi K20 Pro has a glass back with one of the most evocative gradient patterns you'll come across on any phone today - it's both premium to feel, and stunning to look at
  • The gradient effect that kicks in under the right lighting condition is quite mesmerising
  • The front is modern and sharp too, with a 'full screen' notch-less display (the selfie camera is a 'popup' one)
  • Decent in-screen fingerprint sensor - reasonably quick and reliable
  • Gorgeous, 6.39-inch Super AMOLED display - easily one of the best panels you'll find in this price segment - it has vibrant colors and excellent contrast levels, and sunlight readability is great as well
  • Of course, the lack of a cutout means you get an all-screen front, and the minimal bezels at the top and bottom create an immersive experience when playing games or viewing videos on the device
  • MIUI, especially with it's recent improvements continues to one of the better, more cohesive custom Android UIs around - and it's packed with features like gesture navigation, anti-flicker mode, reading mode, second space, dual apps, themes, etc
  • The K20 Pro also adds the POCO Launcher on top of MIUI - which brings the Dark Mode and App drawer to the K20 Pro
  • Xiaomi is also rolling out a Game Turbo feature that prioritizes bandwidth and mutes incoming notifications when you're in a game
  • Top-notch flagship performance with the top-notch Snapdragon 855 chipset at the core - the K20 Pro is expectedly a performance beast - and gets the highest Antutu scores of any Android phone at the moment
  • Very good triple rear camera setup - the phone has a 48MP primary camera backed by an 8MP telephoto lens and a 13MP wide-angle shooter
  • Image quality is great in all sorts of lighting conditions - they look crisp, vibrant, and details are captured well
  • The ultra-wide sensor and 2x telephoto lens also produce generally good results
  • The K20 Pro also comes with a dedicated night mode that does the usual multi-frame processing, and the results are pretty good - it gets more light in, and makes things sharper
  • Decent 20MP popup selfie camera, with a good portrait mode
  • Overall, the rear camera setup on the K20 Pro is the best for this price bracket, and matches up well to more expensive phones like the OnePlus 7 and Asus 6Z
  • Has a 3.5mm jack, that a lot of flagships these days tend to skimp on
  • Loud (single) downward firing speaker
  • Very good battery life with a 4000mAH battery - combine that with a very efficient 855 processor, and you will comfortably get 1.5 days of use
  • Fast charging support - up to a cool 27W (a 27W capacity charger will however need to be purchased separately for super fast charging - that said, Xiaomi does include a still-very-fast 18W charger in the box)
  • Xiaomi has again hit the ball out of the park with the Redmi K20 Pro, providing a still-excellent-value successor to the super successful Poco F1 - this is the cheapest price point at which you will get the flagship Snapdragon 855, along with all the latest features of 2019 - full screen, popup selfie camera, and in-display fingerprint sensor - people who attach more value to the software experience though might still want to spend a little more and go for the OnePlus 7 or Asus 6Z, for a cleaner experience
2-minute Review [Negatives]
  • The in-display fingerprint sensor as well as the facial recognition are on the slower side
  • The glossy body is prone to picking up fingerprints
  • There's still some bloatware pre-installed, including third-party apps and some of Samsung's own apps such as Samsung Shop (though most of them can be uninstalled)
  • At this price, the performance feels weak - there are cheaper phones that offer much better performance, like the Redmi K20 & the Realme X2
  • Low light photos out of the Galaxy A51 aren't great (from all cameras) - The output is soft and noisy, while the colours are relatively desaturated
  • Overall, while the Galaxy A51 offers good cameras, there are certainly better options available, such as the Redmi K20 Pro
  • However, as far the value for money goes, the Galaxy A51 is far behind from the competition - there are better options like the Redmi K20 Pro which gets you a flagship-grade processor, an HDR display, more premium materials, and even better cameras - in fact, for a bit less money, you could also get the Redmi K20, which is also very capable
  • Face unlock mechanism is a little clunky - you have to first wake the screen and swipe up for the camera module to engage (this might get sorted via a software update though)
  • One issue with MIUI in recent times is the ads in the interface & notifications - those are still there (though a little less intrusive) - and while there are ways to disable them, it's a technical solution that a lot of prospective buyers will not be aware of
Expert Reviews
  1. If you absolutely must have a Samsung, this one isn't bad to spend the brand-related premium on... but there are better options available
    gsmarena.com in-depth Read Review »
  2. A nice-looking phone that offers a beautiful AMOLED display, very good battery life, and we don’t mind the plastic build at all... but the performance is underwhelming
    phonearena.com in-depth Read Review »
  3. Galaxy A51 packs a great screen, a handful of cameras, and a big battery... but it's not a consistent performer
    engadget.com in-depth Read Review »
  4. The Galaxy A51 appeals to those looking for a polished experience, a slim and light body, solid battery life, a crisp display, and of course the Samsung brand... but a more powerful processor at this price would be preferred
    gadgets.ndtv.com in-depth Read Review »
  5. The Galaxy A51 gets few things right like the great display, versatile camera setup, sleek design, and slim form factor... but it does not pack the power, considering its price point
    fonearena.com in-depth Read Review »
  6. There’s a lot to like including the Infinity-O display, stylish design as well as good cameras.
    indianexpress.com in-depth Read Review »
  7. Samsung Galaxy A51 has great design and display, decent cameras, reliable battery and Samsung's brand trust and loyalty... but performance could have been better
    ibtimes.co.in in-depth Read Review »
  8. A very respectable mid-range mobile
    stuff.tv in-depth Read Review »
  9. Offer a unique Samsung experience tailored to the next gen Indian buyer
    indiatoday.in in-depth Read Review »
  10. Buy it for daily tasks, and if you like the looks... ignore if you're looking for power
    firstpost.com in-depth Read Review »
  11. This is a phone that you could flaunt
    zeebiz.com in-depth Read Review »
  12. The Galaxy A51 is a mid-range smartphone that does a good job in all areas and takes good photos
    notebookcheck.net in-depth Read Review »
  13. If you aren't too bothered about gaming and just want a great everyday driver which is sleek and lasts through the day on a single charge, the Galaxy A51 will certainly not disappoint... but the overall performance is a bit of a letdown
    in.mashable.com in-depth Read Review »
  14. A mid-ranger with plenty of polish
    pocket-lint.com in-depth Read Review »
  15. androidauthority.com in-depth Read Review »
  16. digitaltrends.com in-depth Read Review »
  17. expertreviews.co.uk in-depth Read Review »
  18. gadgetsnow.com in-depth Read Review »
  19. techpp.com in-depth Read Review »
  20. deccanchronicle.com in-depth Read Review »
  21. techadvisor.co.uk in-depth Read Review »
  22. trustedreviews.com hands-on Read Review »
  23. themobileindian.com hands-on Read Review »
  1. The best smartphone you can buy today in this price bracket...it's the spiritual successor to a rare smartphone blend known as flagship killers, a series that OnePlus may have conceived, but has since forgotten
    gsmarena.com in-depth Read Review »
  2. Excellent value for money
    gadgets.ndtv.com in-depth Read Review »
  3. A satisfying device that won’t break the bank
    fonearena.com in-depth Read Review »
  4. The most affordable flagship you can buy right now, that comes with all the bells and whistles that are in vogue this year
    digit.in in-depth Read Review »
  5. Xiaomi's 'Fight Song' against OnePlus...If your budget is Rs 30,000 then it hard to look past this smartphone
    bgr.in in-depth Read Review »
  6. Simply one of the best deals in smartphones right now
    androidauthority.com in-depth Read Review »
  7. As good a flagship as any other..the price works to its advantage
    indianexpress.com in-depth Read Review »
  8. This is the flagship to beat
    hindustantimes.com in-depth Read Review »
  9. The best affordable flagship on the market
    news18.com in-depth Read Review »
  10. Move over OnePlus, there’s a new mid-range king
    expertreviews.co.uk in-depth Read Review »
  11. Xiaomi has done it again: the Redmi K20 Pro delivers incredible value
    androidcentral.com in-depth Read Review »
  12. If OnePlus was the brand for those looking for a reasonably priced flagship smartphone, the Redmi K20 Pro now fills that space
    livemint.com in-depth Read Review »
  13. The K20 Pro is by far the best smartphone we’ve seen from Xiaomi and it very well deserves a space in your pocket
    stuff.tv in-depth Read Review »
  14. A hard-to-ignore Flagship Killer from Xiaomi
    themobileindian.com in-depth Read Review »
  15. Wears the best budget flagship crown...very hard to beat in terms of sheer value for money
    deccanchronicle.com in-depth Read Review »
  16. Top-end features for a low-end price – the rise of Xiaomi continues
    t3.com in-depth Read Review »
  17. Almost everything other flagships have, but cheaper
    in.pcmag.com in-depth Read Review »
  18. It's quite simply bonkers the Mi 9T Pro (Redmi K20 Pro) sells for the price it does, given its flagship specifications....easily the best phone at this price
    pocket-lint.com in-depth Read Review »
  19. Best bang for your buck
    pandaily.com in-depth Read Review »
  20. Embodies almost everything that’s great about flagships in 2019 and it does so at an extremely competitive price
    in.mashable.com in-depth Read Review »
  21. Flagship killer...what it manages to deliver at this price point, is commendable, to say the least
    indiatimes.com in-depth Read Review »
  22. The best part of the K20 Pro is that beauty is not just skin deep...holds excellent value over several flagships in the market right now
    timesnownews.com in-depth Read Review »
  23. The most complete phone available at this price point...delivers on everything that matters
    indiatoday.in in-depth Read Review »
  24. A brilliant mid-premium smartphone...Highly recommended
    firstpost.com in-depth Read Review »
  25. asianage.com in-depth Read Review »
  26. gadgetsnow.com in-depth Read Review »
  27. zdnet.com hands-on Read Review »
User Reviews
  1. Flipkart4.4 850+ reviews »
  1. Flipkart4.5 9,230+ reviews »
Official Website Official Website » Official Website »
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