Our Opinion

The Xiaomi Redmi K20 Pro (6GB RAM, 128GB) is a slightly better phone than the Asus 6z (6GB RAM, 64GB), and is also significantly better value for money. What should you buy? Go for the Xiaomi Redmi K20 Pro (6GB RAM, 128GB)!

Asus 6z (6GB RAM, 64GB)  Xiaomi Redmi K20 Pro (6GB RAM, 128GB) 
Asus Zenfone 6 2019 Xiaomi Redmi K20 Pro
Buy Now  not available currently Buy
Excellence Score
68.2
68.4
Value for Money Score
67.5
86.2
Price ₹ 31,999 onwards ₹ 23,464 onwards
Launch Date (India) Jun, 2019 Jul, 2019
Expected Launch Date N/A N/A
Smartphone OS Android 9.0 Pie, Upgradeable to 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 6.4 inches 6.39 inches
Screen Resolution 1080x2340 pixels (~ 403 pixels per inch) 1080x2340 pixels (~ 403 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 6 Yes, Corning Gorilla Glass 5
Display Type IPS LCD AMOLED
Display Features DCI-P3 Support, HDR10 HDR, Always-On Display
Full Physical QWERTY Keypad
Processor 2.84 GHz 2.84 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 855Ranked #7 in Mobile Processor Benchmarks Qualcomm Snapdragon 855Ranked #7 in Mobile Processor Benchmarks
GPU Adreno 640 Adreno 640
RAM 6 GB 6 GB
3G Yes Yes
4G Yes Yes
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 + 13MP 48MP + 13MP + 8MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 48MP: F/1.8 Aperture; 26mm Focal Length (Wide); 1/2" Sensor Size; 0.8um Pixel Size; Laser Autofocus/PDAF, 13MP: F/2.4 Aperture; 11mm Focal Length (Ultra-wide), HDR, Auto Panorama, Video: 2160p@30/60fps; 1080p@30/60/240fps; 720p@480fps, Gyro-EIS 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: 2160p@30/60fps; 1080p@30/120/240fps; 1080p@960fps
Secondary Camera 48MP + 13MP 20MP
Secondary Camera Features Motorised flip-up Rear Camera, 48MP: F/1.8 Aperture; 26mm Focal Length (Wide); 1/2" Sensor Size; 0.8um Pixel Size; Laser Autofocus/PDAF, 13MP: F/2.4 Aperture; 11mm Focal Length (Ultra-wide), HDR, Auto Panorama, Video: 2160p@30/60fps; 1080p@30/60/240fps; 720p@480fps, Gyro-EIS Motorized Pop-up Camera, F/2.2 Aperture, 0.8um Pixel Size, HDR
Internal Memory 64 GB 128 GB
Expandable Memory Slot Yes, up to 2 TB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes Yes
Dual SIM GSM + GSM GSM+GSM
Thickness 9.2 mmThick 8.8 mmMedium
Weight 190 gmMedium 191 gmHeavy
Width 75.4 mmOk for one-handed use 74.3 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 5000 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, 18W Quick Charge 4.0 Yes, 27W Quick Charge 4.0
Included Fast Charger Yes, 18.0W Fast Charger Yes, 18.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features NFC; Stereo Speakers; Noise Filtration; DTS Headphone X In-display fingerprint sensor; Noise Filtration; Game Turbo 2.0; Hi-Fi DAC Audio; Hi-Res Audio
2-minute Review [Positives]
  • Beautiful, stand-out design - a curved rear that fits nicely into the palm of your hand, a glossy back, and most importantly, a 6.4 in full-screen display free of bezels and notches
  • A neatly positioned, well thought-out alert and charge light - in the top right corner just above the screen
  • A handy, configurable Smart Key (defaults to Google Assistant) - you can configure it to have specific single-press, double-press and long-press actions
  • The physical fingerprint sensor at the back is fast, and conveniently positioned, for both left- and right-handed use
  • Large, clear, immersive 6.4-inch screen with minimal bezels, and of course, no notch
  • ZenUI 6 is leaner, faster, more streamlined than before - making it now one of the best and most clean Android UI implementations around
  • There are range of tweaks of course - OptiFlex (learns which apps you use and loads them faster than the norm), Dark Mode (essentially replaces the white background with a black one easing eye strain), Smart Volume (sets media, ringtones and call volume to a level appropriate to ambient noise) - there are plenty of other tweaks too, but they are less obtrusive than previous iterations of ZenUI
  • Asus also adds a range of its own apps including a gallery, file manager, weather app, data transfer tool, sound recorder and its own camera app - which are handy - and there is no unnecessary bloat
  • Top-end flagship performance with the flagship Snapdragon 855 underneath - the Zenfone 6 is in fact one of the cheapest phones at present to pack the 855
  • Of course, the highlight of the Zenfone 6 is the clever, unique flip camera system
  • Asus has thought not just about removing the front camera for the 'full screen' experience, but also about enhancing the camera's usability - the result is not just another pop-up design - open the camera app and the dual rear-facing lenses are used in the usual way - switch to selfie mode and the camera housing swings out from the back of the handset until the two lenses sit proud of the top of the phone, facing forwards!
  • The camera system consists of dual cameras - a 48MP primary camera + a 13MP ultra-wide camera, that can create some cool framing opportunities
  • The image quality is very impressive - even considering the excellent competition - in daylight shots, you can expect a great deal of detail, while indoor shots too capture texture and detail well
  • The special camera setup means there are a bunch of smart features, like motion tracking (set this off and the camera will follow a moving subject, as long as it's moving slowly), and a motorized panorama mode (select it and hold the camera steady, and the flip lens moves through its full 180 degrees, shooting as it goes)
  • Night mode shooting captures quite a lot of detail
  • Great video quality, with very capable stabilization, and range of video modes - the ability to record at 4K@60fps with EIS is a nice touch, too
  • Finally, of course, the best outcome from the flip camera mechanism is that you now get to use the same excellent rear cameras as your front cameras as well - this means that the selfie quality is pretty much unrivalled, when compared to even the best of camera phones
  • There is some added shot-framing flexibility as well - if you hold the selfie button a slider pops up that can be used to rotate the camera housing into a particular position -- perhaps using it as a stand, or to get a shot that's at an awkward angle
  • Finally, what you are getting is excellent quality in daylight and low light, image and video, front and back - making for one of the best camera phones, especially in this price bracket (and yes, it's a significant way ahead of the OnePlus 7)
  • Nice stereo speakers - they deliver plenty of volume, and reasonably good quality
  • The other big highlight of the Zenfone 6, apart from the flip camera setup, is the exceptional, class-leading battery life, powered by a huge 5000mAH battery - you are going to get 2 days of use from this beast with moderate use
  • QuickCharge 4.0 support
  • No 2 ways about it, Asus has delivered a surprising capable, sublime mid-ranger here, and given OnePlus a lot to worry about
  • A great camera setup, and an excellent battery life are the highlights - and add to that some nice-to-haves that are increasingly harder to find in the high-end segment like a headphone jack, a status LED, and a dedicated microSD slot, and you can see how the Zenfone 6 makes a really compelling case for itself
  • The 2 main competitors will be the OnePlus 7 (better AMOLED display, but not as good cameras), and Pixel 3a (better cameras, but behind in most other areas) - and the Zenfone 6 is likely to compete well against these champions
  • 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]
  • Like all glossy backs do, this one too will attract a lot of fingerprints
  • Relatively hefty (190g)
  • Face unlock is not as quick as on other competing phones with the time taken to flip the rear camera forward adding a little delay
  • But the screen is LCD, rather than OLED, so it's not quite as gorgeous as the AMOLED on the OnePlus 7
  • The only phone in this price bracket that is arguably a bit better in overall camera quality is the Pixel 3a
  • 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. Come in for the cool motorized camera, stay for everything else...makes a really compelling case for itself
    gsmarena.com in-depth Read Review »
  2. Any Android enthusiast would be thrilled to get their hands on one of these
    phonearena.com in-depth Read Review »
  3. The Asus ZenFone 6 is the best option at this price, as long as you don’t mind a big phone
    theverge.com in-depth Read Review »
  4. Many people will probably be drawn in by the Asus ZenFone 6's motorized flip camera, but they'll stay for the great value, battery life and raw performance, as these are what truly makes it worth buying
    techradar.com in-depth Read Review »
  5. Asus has delivered an all-rounder with a lot of great features
    gadgets.ndtv.com in-depth Read Review »
  6. Asus has nailed the pricing
    bgr.in in-depth Read Review »
  7. Offers incredible value ...If you want 90 percent of a flagship for 50 percent of the price, this is the phone to beat
    androidauthority.com in-depth Read Review »
  8. An exciting flagship phone like no other...at the price, it's a bargain
    digitaltrends.com in-depth Read Review »
  9. Stands out for the right reasons
    trustedreviews.com in-depth Read Review »
  10. Solid premium smartphone...Between OnePlus 7 and Asus 6Z, the latter wins
    ibtimes.co.in in-depth Read Review »
  11. A sublime, well-rounded package for not much money
    expertreviews.co.uk in-depth Read Review »
  12. A great phone for value-conscious enthusiasts and selfie-takers...ASUS is back
    androidcentral.com in-depth Read Review »
  13. Priced well...along with the Redmi K20 Pro, the Asus 6Z is an able alternative to the OnePlus 7
    livemint.com in-depth Read Review »
  14. Very impressive
    zdnet.com in-depth Read Review »
  15. The no-nonsense flagship smartphone
    gadgetsnow.com in-depth Read Review »
  16. A very interesting and capable phone...Asus gets clever with the camera, and it works
    in.pcmag.com in-depth Read Review »
  17. Sure-shot excellent buy
    timesnownews.com in-depth Read Review »
  18. Impressive...might well be the surprise flagship success of 2019
    pocket-lint.com in-depth Read Review »
  19. Immense value for money...a camera centric alternative to the OnePlus 7
    firstpost.com in-depth Read Review »
  20. A deal you can't miss
    indiatoday.in in-depth Read Review »
  21. A phenomenal phone..one of our favourite smartphones of 2019
    techadvisor.co.uk in-depth Read Review »
  22. fonearena.com in-depth Read Review »
  23. indianexpress.com in-depth Read Review »
  24. tomsguide.com in-depth Read Review »
  25. business-standard.com in-depth Read Review »
  26. deccanchronicle.com in-depth Read Review »
  27. in.mashable.com in-depth Read Review »
  28. indiatimes.com in-depth 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
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Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
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