Our Opinion

The Samsung Galaxy M51 (8GB RAM) is a significantly better phone than the realme X2 (8GB RAM, 256GB), and is also slightly better value for money. What should you buy? Go for the Samsung Galaxy M51 (8GB RAM)!

Samsung Galaxy M51 (8GB RAM)  realme X2 (8GB RAM, 256GB) 
Samsung Galaxy M51 realme XT 730G
Buy Now Buy Buy
Excellence Score
69.6
55.5
Value for Money Score
84.8
81.7
Price ₹ 24,999 onwards ₹ 18,999 onwards
Launch Date (India) Sep, 2020 Jul, 2020
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 6.7 inches 6.4 inches
Screen Resolution 1080x2340 pixels (~ 385 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 N/A Night mode
Full Physical QWERTY Keypad
Processor 2.2 GHz 2.2 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 730GRanked #19 in Mobile Processor Benchmarks Qualcomm Snapdragon 730GRanked #19 in Mobile Processor Benchmarks
GPU Adreno 618 Adreno 618
RAM 8 GB 8 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 64MP + 12MP + 5MP + 5MP 64MP + 8MP + 2MP + 2MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 64MP: f/1.8 Aperture; 26mm Focal Length; 1/1.72"; 0.8um Pixel Size; PDAF, 12MP: f/2.2 Aperture; 123-degree ultra-wide lens, 5MP: f/2.4 Aperture; Macro Camera, 5MP: f/2.4 Aperture; Depth Sensor 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/2.0 aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR N/A
Internal Memory 128 GB 256 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 9.5 mmThick 8.6 mmMedium
Weight 213 gmHeavy 182 gmMedium
Width N/A 75.2 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant Yes, Splash resistant
Battery Capacity 7000 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, 25W Fast Charging Yes, 30W VOOC Flash Charge
Included Fast Charger Yes, 25.0W Fast Charger Yes, 30.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features UFS 2.1 Storage; NFC; FM Recording; Noise Filtration; Dolby Atmos UFS 2.1 Storage; In-display Fingerprint Sensor; Noise Filtration; Dolby Atmos
2-minute Review [Positives]
  • Sleek, classy design - the Galaxy M51 seems identical to the Galaxy A51, with a glossy polycarbonate back design - giving it a premium look
  • The front gets a new trendy look with a hole-punch display, similar to the Galaxy M31s
  • The phone feels solid in the hand - the 'glasstic back' offers better grip, and it is not as slippery as other phones with a glass back
  • The side-mounted fingerprint scanner is quick to unlock the device
  • Punchy, vivid and massive 6.7-inch FHD+ Super AMOLED display - the display is one of the best in class panels with great colour reproduction and viewing angles
  • It also comes with "Widevine L1" certification, which helps stream content in crisp HD resolution
  • Blacks are deep on the AMOLED display, which looks good with Dark mode enabled
  • Samsung's OneUI is today one of the more clean, refined Android UIs that's especially well optimized for large displays like this one
  • One UI also brings in other useful stuff, like a System-wide Dark mode (which turns the background completely black and looks great on the M51's AMOLED display), and Always On Display option
  • Very good performance from the Snapdragon 730G - the chipset and Samsung’s OneUI optimization could take anything that you throw at it, switching across apps, moving across the UI, multitasking, and opening multiple Chrome tabs, social media is a breeze - heavy games like Call of Duty run smoothly without any lag
  • Samsung has fixed the only major drawback it had in other M-series phones with average performance, and this time the Galaxy M51 has no issue taking on the competition in performance
  • Good quad rear camera setup - 64MP main sensor + 12MP wide-angle lens + 5MP depth sensor + a 5MP macro camera - the Galaxy M51 carries the same camera setup as seen on the Galaxy M31s
  • Shots taken with the primary camera during daylight are quite satisfactory, images are detailed, especially the 64MP shots, and they showcase the good dynamic range
  • The ultra-wide sensor, like on any mid-range phone, is a good addition - it takes social media-worthy images in great lighting conditions (in low-light, the quality dips and pictures look grainy and noisy, wide-angle shots also have barrel distortion at the edges)
  • Photos taken in low-light looks good - switching to Night mode helps reduce grain in the output and further improves image quality
  • Live Focus shots are quite impeccable and the camera app does give you the option to set the level of blur before taking a shot - edge detection is very good and the Galaxy M31 does a good job of separating the subject from the background
  • The macro camera takes decent shots outdoors (though, the quality dips when indoors and the output is restricted to 5MP in resolution)
  • The single take is a nice addition from the more expensive S20 series, it lets you capture multiple formats at once
  • The 32MP selfie camera is quite good and takes detailed selfies (though in low light, the quality goes down a notch and results are grainy)
  • Overall, the cameras on the M51s are good for the price bracket, even though they are not the best
  • Mammoth, out of this world 7000mAh battery delivers an incredible 2-3 days of heavy usage easily, making the Galaxy M51 the largest battery life smartphones currently available
  • Supports 25W fast charging - the phone takes around 2 hours to charge the battery completely, which is decent
  • The Galaxy M51 brings very good value as its big battery, powerful cameras, and expansive display all help make a solid argument in the device's favour - the phone's Snapdragon 730G SoC also ensures that M51 offers enough in terms of raw power to help it tackle most things you throw at it
  • 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 Galaxy M51 feels hefty at 9.5mm thickness and 213g weight - it is difficult to use for a longer duration for calls, streaming, or even gaming
  • The back of the Galaxy M51 is a fingerprint magnet - it can also get scratched easily since it is plastic
  • The display lags with a 60 Hz display, where competing phones like OnePlus Nord offer higher 90 Hz refresh rate
  • There's still great competition at this price and the OnePlus Nord has a lot up its sleeve with a newer processor, higher refresh rate display, and a best in class software
  • 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. The Samsung Galaxy M51 packs in a massive battery, Super AMOLED panel and Snapdragon chipset, although the stand out feature here is the battery, it won't disappoint you in any aspect
    techradar.com in-depth Read Review »
  2. The Galaxy M51 has grabbed a lot of attention because of its big 7,000mAh battery, and it really does deliver very good battery life
    gadgets.ndtv.com in-depth Read Review »
  3. A satisfying phone
    indianexpress.com in-depth Read Review »
  4. The massive battery on the Galaxy M51 is a sure-shot advantage and other great features include a beautiful display, modern design, reliable cameras and decent performance
    ibtimes.co.in in-depth Read Review »
  5. Its got all the battery you need
    indiatoday.in in-depth Read Review »
  6. bgr.in in-depth Read Review »
  7. economictimes.indiatimes.com in-depth Read Review »
  8. themobileindian.com in-depth Read Review »
  9. zeebiz.com in-depth Read Review »
  10. techpp.com in-depth Read Review »
  11. business-standard.com in-depth Read Review »
  12. financialexpress.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 N/A
  1. Flipkart4.5 4,980+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
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