Our Opinion

The realme X2 (6GB RAM, 128GB) is a significantly better phone than the Samsung Galaxy A51, and is also significantly better value for money. What should you buy? Go for the realme X2 (6GB RAM, 128GB)!

Samsung Galaxy A51  realme X2 (6GB RAM, 128GB) 
Samsung Galaxy A51 realme XT 730G
Buy Now Buy Buy
Excellence Score
51.5
61.3
Value for Money Score
65.7
87.7
Price ₹ 23,990 onwards ₹ 18,899 onwards
Launch Date (India) Jan, 2020 Dec, 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 6.4 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
Display Features Super AMOLED Night mode
Full Physical QWERTY Keypad
Processor 2.3 GHz 2.2 GHz
Processor Type Octa Core Octa Core
Processor Name Samsung Exynos 9611Ranked #28 in Mobile Processor Benchmarks Qualcomm Snapdragon 730GRanked #16 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Adreno 618
RAM 6 GB 6 GB
3G Yes Yes
4G Yes Yes
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port USB-C USB-C
Primary Camera 48MP + 12MP + 5MP + 5MP 64MP + 8MP + 2MP + 2MP
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 64MP: 1/1.72" Sensor Size; Samsung GW1 Sensor; 0.8um Pixel Size; F/1.8 Aperture; EIS, 8MP: 119° Wide-angle Camera; F/2.25 Aperture; 5P lens, 2MP: Depth Sensor, 2MP: Macro Camera; 4cm Shooting Distance, AI HDR, AI beauty, AI scene recognition, Chrome boost, Super nightscape, Filter mode, Panorama, Expert mode, Time-Lapse
Secondary Camera 32MP 32MP
Secondary Camera Features f/2.2 Aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR F/2.0 Aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR
Internal Memory 128 GB 128 GB
Expandable Memory Slot Yes, up to 512 GB Yes, up to 256 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes
Dual SIM GSM+GSM GSM+GSM
Thickness 7.9 mmMedium 8.6 mmMedium
Weight 172 gmMedium 182 gmMedium
Width 73.6 mmOk for one-handed use 75.2 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant Yes, Splash 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, 30W VOOC Flash Charge
Included Fast Charger Yes, 15W Fast Charger Yes, 30W 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 UFS 2.1 Storage; In-display Fingerprint Sensor; Noise Filtration; Dolby Atmos
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)
  • Beautiful, attractive, premium glass design (Gorilla Glass 5 on the front and back), with a modern gradient finish at the back - identical to the Realme XT
  • The phone is also marginally smaller than the Realme X and is lighter too at 183 grams, which gives it a very balanced in-hand feel
  • The glass on the back is of the glossy kind, but it barely registers any fingerprints or smudges and it isn’t very reflective
  • The in-display fingerprint sensor is snappy (the fastest in this price bracket), as is the facial recognition
  • Excellent 6.4-inch FHD+ (1080x2340) Super AMOLED display with a dewdrop notch - again same as as the Realme XT - it has vibrant colours, deep blacks, good sunlight legibility, and good viewing angles - one of the best displays of this price range
  • Also comes with Widevine L1 standard, which means videos on platforms like Netflix and Prime can be seen in crisp HD resolution
  • ColorOS is fairly streamlined, and packs fast animations that help the phone feel snappy - there are of course several add-on features too, compared to what you would get in stock Android
  • The UI also isn’t ad-strewn as recent Xiaomi phones have tended to be
  • Excellent, butter smooth performance backed by the powerful Snapdragon 730G (15% faster than the Snapdragon 730 in graphics performance), which makes the Realme X2 one of the best-performing phones in this price range, especially for gaming - even ahead of the Redmi K20 in benchmarks - the Realme X2 breezes through pretty much any task you throw at it and is also an excellent smartphone to game on - even heavy games like PUBG Mobile, COD Mobile run consistently smooth
  • Very good quad-camera setup at the rear - 64MP primary + 8MP ultra-wide + 2MP macro + 2MP depth sensor
  • The primary 64MP camera works (by default) on a 4-in-1 pixel binning technology that combines four 16MP shots to offer one bright and detailed photo
  • The primary camera capture some really attractive photos in daylight, offering good brightness and clarity - with HDR enabled, the camera offers a wide dynamic range
  • The ultra-wide-angle camera comes in handy if you want to capture a wider frame of view or want a different perspective on the subject (but there is some noise even in daylight conditions)
  • The camera also supports Nightscape (Night mode), which comes in handy in low-light conditions, and helps improve picture clarity
  • The Realme X2 also does a very good job when using Portrait mode - edge detection is excellent thanks to the dedicated 2-megapixel depth sensor and details are crisp
  • Good video recording quality - image quality is good, and there is also stabilisation at 1080p (but not at 4k) - video bokeh feature also works very well and it can maintain a very accurate edge detection with busier backgrounds (low light video recording could have been better though)
  • Very good selfies from the 32MP front camera - it captures very good portrait selfies with crisp edges and background properly blurred - there is also night mode for selfies and it works pretty well
  • Overall, Realme X2 has one of the best cameras under 20k category, arguably right behind the Redmi Note 8 Pro & Redmi K20
  • Good speaker - verbal audio sounds clear enough even in max volume, and the audio is loud enough for you to hear the phone ring from another room
  • Good battery life with a large 4000mAh battery - you will get about 1.5 days of moderate use
  • There is super-fast, class-leading 30W VOOC 4.0 fast charging support - you can charge up the Realme X2 from 0 to 100% in an hour with the supplied charger
  • Realme has yet again managed to craft an excellent package with the Realme X2, especially if you want to do heavy gaming - Realme’s strategy of bring high-end features like the 30W VOOC Charging & in-display fingerprint sensor to a mid-range phone makes the Realme X2 a very compelling phone to buy
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
  • There is, as usual, some bloatware that comes pre-installed (but most of it can be uninstalled)
  • The macro lens is ordinary - you will be able to get really close to the subject, but detail levels in the images are low
  • Having said that, the competition is neck-to-neck - there is Redmi K20 which offers a full notch-less display, even more polished design and slightly better camera at a similar price (at the cost of slower 'fast' charging) - and if you are on a tight budget, the cheaper Redmi Note 8 Pro is also a very good option as long as you don’t care about the AMOLED display and an in-display fingerprint sensor
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. 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 »
  4. 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 »
  5. There’s a lot to like including the Infinity-O display, stylish design as well as good cameras.
    indianexpress.com in-depth Read Review »
  6. 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 »
  7. A very respectable mid-range mobile
    stuff.tv in-depth Read Review »
  8. 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 »
  9. Offer a unique Samsung experience tailored to the next gen Indian buyer
    indiatoday.in in-depth Read Review »
  10. 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 »
  11. This is a phone that you could flaunt
    zeebiz.com in-depth Read Review »
  12. techpp.com in-depth Read Review »
  13. deccanchronicle.com in-depth Read Review »
  14. trustedreviews.com hands-on Read Review »
  15. themobileindian.com hands-on Read Review »
  1. An easy recommendation, and we can't really think of a reason why you shouldn't get the X2
    gsmarena.com in-depth Read Review »
  2. Superb all-rounder at this price
    gadgets.ndtv.com in-depth Read Review »
  3. Value-for-money
    fonearena.com in-depth Read Review »
  4. Realme has yet again managed to craft a compelling package...impressive performance at an affordable price
    bgr.in in-depth Read Review »
  5. Beating Xiaomi at its own game...a prime example of just how good customers have it in the mid-range segment
    androidauthority.com in-depth Read Review »
  6. A very good affordable phone that outguns most of the opposition with its exemplary hardware, if not its software
    trustedreviews.com in-depth Read Review »
  7. Good overall package
    indianexpress.com in-depth Read Review »
  8. The Realme X2 is a smart buy if you want a good gaming device with a long battery life and fast charging
    economictimes.indiatimes.com in-depth Read Review »
  9. A brilliant phone at an affordable price
    expertreviews.co.uk in-depth Read Review »
  10. Power-packed smartphone of the season
    deccanchronicle.com in-depth Read Review »
  11. Realme X2 is a midrange phone that ticks all the right boxes
    business-standard.com in-depth Read Review »
  12. The best phone under Rs 20,000
    in.mashable.com in-depth Read Review »
  13. A complete package and under Rs 20,000, it's one of the best deals you can find today
    indiatoday.in in-depth Read Review »
  14. It will boil down to personal preference, but rest assured, you cannot go wrong with either of the two smartphones - Realme X2 or Redmi K20 - both are excellent
    themrphone.com in-depth Read Review »
  15. Staggering value for money
    techpp.com in-depth Read Review »
  16. themobileindian.com in-depth Read Review »
  17. timesnownews.com in-depth Read Review »
  18. zeebiz.com in-depth Read Review »
  19. firstpost.com hands-on Read Review »
User Reviews
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  1. Flipkart4.5 1,397+ reviews »
  2. Amazon4.0 3+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
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