Our Opinion

The Samsung Galaxy M21 (4GB RAM, 64GB) is a significantly better phone than the Vivo U20 (6GB RAM), and is also significantly better value for money. What should you buy? Go for the Samsung Galaxy M21 (4GB RAM, 64GB)!

Samsung Galaxy M21 (4GB RAM, 64GB)  Vivo U20 (6GB RAM) 
Samsung Galaxy M21 Vivo U20
Buy Now Buy Buy
Excellence Score
39.6
33.1
Value for Money Score
84.4
72.7
Price ₹ 12,699 onwards ₹ 12,990 onwards
Launch Date (India) Mar, 2020 Nov, 2019
Expected Launch Date N/A N/A
Smartphone OS Android 10Expected update to next Android version Android 9.0 PieLow likelihood of getting updated to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.4 inches 6.53 inches
Screen Resolution 1080x2340 pixels (~ 403 pixels per inch) 1080x2340 pixels (~ 395 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 3 Yes
Display Type AMOLED IPS LCD
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED N/A
Full Physical QWERTY Keypad
Processor 2.3 GHz 2 GHz
Processor Type Octa Core Octa Core
Processor Name Samsung Exynos 9611Ranked #31 in Mobile Processor Benchmarks Qualcomm Snapdragon 675Ranked #24 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Adreno 612
RAM 4 GB 6 GB
3G Yes Yes
4G Yes Yes
5G
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port USB-C microUSB
Primary Camera 48MP + 8MP + 5MP 16MP + 8MP + 2MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (Full HD)
Other Camera Features 48MP: f/2.0 aperture; 26mm Focal Length; 1/2.0" Sensor Size; 0.8um Pixel Size; PDAF, 8MP: f/2.2 aperture; 12mm Focal Length; Ultra-wide; 1/4.0" Sensor Size; 1.12um Pixel Size, 5MP: f/2.2 aperture; Depth Sensor, Panorama, HDR, Video: 2160p@30fps; 1080p@30fps; EIS 16MP: f/1.78 Aperture, 8MP: f/2.2 Aperture, 2MP: f/2.4 Aperture, AI Super Wide Angle, Bokeh, Super Macro, HDR, AI Portrait Framing, Live Photo, Panorama, AR Stickers, Super Wide Angle Video, Time Lapse, Slo-Mo, Video Face Beauty
Secondary Camera 20MP 16MP
Secondary Camera Features f/2.0 aperture, 26mm Focal Length, HDR f/2.0 Aperture, Screen Flash, AI Face Beauty, HDR, Filters, Live Photo, AR Stickers, Mirror Selfie
Internal Memory 64 GB 64 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 (Wireless) Yes
Dual SIM GSM+GSM GSM+GSM
Thickness 8.9 mmMedium 8.89 mmMedium
Weight 188 gmMedium 193 gmHeavy
Width 75.1 mmOk for one-handed use 76.4 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 6000 mAh 5000 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, 18W Fast Charging
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 Noise Filtration UFS 2.1 Storage; Reverse Charging; Noise Filtration
2-minute Review [Positives]
  • Decent looks and build quality - very similar to the Samsung Galaxy M31, with a a unibody polycarbonate design, and glossy finish on the back panel - the only major difference is the camera module which houses a triple rear camera
  • The plastic body keeps the phone feeling relatively lightweight at 188 grams, which is mighty impressive for a phone packing a big 6000 mAh battery
  • It also feels great to hold with a seamless curved panel that meets the display up front
  • Modern, Infinity-U front - bezels around the screen are slim, except for a slightly thick chin - you still get around 90 per cent screen-to-body ratio, which is great
  • Fingerprint sensor at the back is easy to reach and work very well
  • Gorgeous, 6.4-inch FHD+ Super AMOLED display with excellent viewing angles, and brightness levels - easily one of the best displays in the price bracket
  • 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 Night mode enabled
  • Samsung's OneUI is today one of the more clean, refined Android UIs that's especially well optimised for large displays like this
  • 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 M21's AMOLED display), and Always On Display option
  • Decent performance with the Exynos 9611 at the core (similar to Snapdragon 665) - the device is fairly quick to load up apps - multitasking is a breeze
  • Decent triple rear camera setup - a 48MP primary snapper, an 8MP ultra-wide lens and a 5MP depth sensor
  • In broad daylight, you'll get consistent, crispy shots with decent dynamic range and sharpness levels are respectable with the primary lens
  • The ultra-wide sensor, like on any budget 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)
  • Live Focus shots are quite good 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 M21 does a good job of separating the subject from the background
  • The 20MP selfie camera is quite good and takes detailed selfies (though, in low light, the quality goes down a notch and results are grainy)
  • Monster 6000 mAh battery delivers an incredible 2-3 days of usage easily, making for one of the largest battery life smartphones currently available
  • Supports 15W fast charging
  • If you're someone who consumes a lot of content on their phone, the Galaxy M21 is a good phone for you, it has great AMOLED display, outstanding battery backup that will last you for days
  • Stylish, slick, premium looks (looks more expensive than it is), good build quality
  • The rear camera module has a copper accent on the edges, which further adds to the premium-ness
  • The front is modern with a 6.53-inch FHD+ IPS display with a dewdrop notch, and minimal bezels
  • Both the fingerprint scanner, and face unlock are quick
  • The IPS display is crisp, and boasts good legibility and viewing angles
  • Very good performance for the price category with a powerful Snapdragon 675 at the core - it delivers smooth performance not just in daily use, but high-end games like PUBG
  • Decent triple-camera setup at the back: 16-megapixel primary lens + 8-super-wide-angle lens + 2-megapixel super macro lens - in good lighting conditions, the images shot offer good exposure as well as good color production
  • Fast focus speed
  • Good portrait mode - blurs the background quite well and gives you good bokeh effect
  • Good 16-megapixel front facing camera - works well in both day-light and low-light conditions, and has a good portrait mode too
  • Overall, the camera setup on the U20 is pretty decent for the price bracket (but not the best)
  • Excellent battery life with a large 5000mAh battery - you should get a comfortable 2 days of use
  • Fast charging support (18W) - you can recharge your phone's battery in about two-and-half hours
  • If you value performance, battery and design in your phone, the the U20 is another excellent option from Vivo, after its popular predecessor, the U10 - the only area where it lags a little behind the competition from Xiaomi and Realme is the cameras
2-minute Review [Negatives]
  • The power button and volumes are quite flush with the frame which means they lack that tactile, clicky feel
  • Design feels a bit dated and underwhelming, there is no spark in Galaxy M21's design as we see in other brand's phones like Xiaomi and Realme
  • However, this is an old chipset and heavy gaming isn't best on this phone - the Redmi Note 9 Pro and the Realme 6 are much better options that will handle gaming better than the Galaxy M21
  • Photos taken in low-light are average - focusing gets worse in low light and the extreme noise-correction makes images look like water paintings
  • Overall, the cameras on the M21 are decent, but there are better cameras available in this price bracket, including the Galaxy M31, which is just a tad bit pricier
  • Samsung Galaxy M11 falls behind in fast charging as competitors are offering close to 30W fast charging, the 15W on M21 feels low
  • Having said that, the Redmi Note 9 Pro and the Realme 6 will still offer you more bang for your buck, overall and when it comes to intensive tasks like gaming, you’ll be better off choosing the Realme 6 or the Redmi Note 8 Pro that are probably the best phones for gaming in this segment
  • Somewhat bulky
  • Vivo's Funtouch UI is one of the heavier Android skins around, and packs plenty of bloatware - which means that if you like your phones simple and fuss-free, it's not the best option around
  • The super-wide angle camera, and the macro camera, while offering some interesting framing options, are not that good in terms of image quality
  • Low light camera performance from the rear camera setup is average (the Night mode does help a bit though)
  • Uses the old microUSB port, instead of the modern USB-C standard
Expert Reviews
  1. A Phone That Caters Best To Video Content Consumers
    in.mashable.com in-depth Read Review »
  2. zeebiz.com in-depth Read Review »
  3. indiatoday.in in-depth Read Review »
  1. If you are looking for a device primarily for gaming then the Vivo U20 should be pretty high on your shortlist...that said, the U20 isn't a perfect all-rounder; the cameras did leave us wanting
    gadgets.ndtv.com in-depth Read Review »
  2. If you need a smartphone that does not leave you alone before your day is over even after heavy gaming or hours of video streaming, then Vivo U20 will be the best option for you....But if you love photography and need a good camera smartphone then you sho
    bgr.in in-depth Read Review »
  3. A good option for those who want to play graphics-heavy games but don’t want an expensive device
    indianexpress.com in-depth Read Review »
  4. A good buy at this price
    economictimes.indiatimes.com in-depth Read Review »
  5. Light on your pocket, but a strong performer indeed
    business-standard.com in-depth Read Review »
  6. Competent contender in the fierce ongoing battle for the budget space
    zeebiz.com in-depth Read Review »
  7. Makes for a worthy choice in isolation, but its sheen starts to fade a little when it's put in direct comparison with the likes of the Redmi Note 8 and Realme 5 -- both of which offer just a little more than the Vivo U20
    timesnownews.com in-depth Read Review »
  8. fonearena.com in-depth Read Review »
  9. themobileindian.com in-depth Read Review »
  10. gadgetsnow.com in-depth Read Review »
  11. gsmarena.com hands-on Read Review »
  12. indiatoday.in hands-on Read Review »
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Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
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