Our Opinion

The Samsung Galaxy A50s (6GB RAM) is a slightly better phone, but the Vivo S1 (6GB RAM, 128GB) is slightly better value for money. Which phone should you buy? It’s a close call, but if your budget allows for it, then Samsung Galaxy A50s (6GB RAM) might be a slightly better choice.

Samsung Galaxy A50s (6GB RAM)  Vivo S1 (6GB RAM, 128GB) 
Samsung Galaxy A50s Vivo S1
Buy Now Buy Buy
Excellence Score
40.5
36.7
Value for Money Score
64.7
67.4
Price ₹ 20,999 onwards ₹ 17,990 onwards
Launch Date (India) Sep, 2019 Sep, 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 PieLow likelihood of getting updated to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.4 inches 6.38 inches
Screen Resolution 1080x2340 pixels (~ 403 pixels per inch) 1080x2340 pixels (~ 404 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes Yes
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED Super AMOLED
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 MediaTek Helio P65Ranked #37 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Mali-G52
RAM 6 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 (4K)
Other Camera Features 48MP: F/2.0 Aperture; 1/2" Sensor Size; 0.8um Pixel Size; PDAF, 8MP: F/2.2 Aperture; 13mm Focal Length; Ultrawide Lens, 5MP: F/2.2 Aperture; Depth Sensor, Panorama, HDR, Video: 2160p@30fps; 1080p@30fps 16MP: F/1.78 Aperture; 1/2.8" Sensor Size; 1.12um Pixel Size; PDAF; Sony IMX499 Sensor, 8MP: F/2.2 Aperture; 13mm Focal Length (Ultrawide); 120° Wide-angle lens, 2MP: F/2.4 Aperture; Depth Sensor, HDR, Panorama, Video: 2160p@30fps; 1080p@30fps, Live Photos, AI Super Wide-Angle, Portrait Mode, AI Portrait Framing, Doc Mode, Professional, AR Stickers, AI Face Beauty, Video, Video Face Beauty, Time-Lapse, Slo-Mo
Secondary Camera 32MP 32MP
Secondary Camera Features F/2.0 Aperture, 25mm Focal Length, HDR F/2.0 Aperture, HDR, Panorama, Live Photos, Gender detection, Face Beauty, Portrait, AR Stickers, Video Face Beauty, AI Selfie Lighting, AI Face Beauty
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 Yes
Dual SIM GSM+GSM GSM+GSM
Thickness 7.7 mmMedium 8.13 mmMedium
Weight 166 gmMedium 179 gmMedium
Width 74.5 mmOk for one-handed use 75.2 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 4000 mAh 4500 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 Internet Usage Time (4G): Upto 14 hrs, Internet Usage Time (WiFi): Upto 15 hrs, Video Playback Time: Upto 20 hrs, Audio Playback Time: Upto 92 hrs, Talktime (4G): Upto 32 hrs N/A
Fingerprint sensor Yes Yes
Other Features In-display Fingerprint Sensor; NFC; ANT+; Noise Filtration In-display Fingerprint Sensor; Noise Filtration
2-minute Review [Positives]
  • Looks slick, and reflects off the same iridescent rainbow-like effects at the back as the Samsung Galaxy A50 when caught against light, only this one, comes with a prism-like pattern that Samsung calls a “3D prism design” - it's a head-turner no doubt
  • And while the Samsung Galaxy A50s bears a polycarbonate body, it doesn’t look cheap and sports a very premium “glassy” look overall
  • On the front is a sharp, modern panel with slim-bezels, and a U-shaped notch design (similar to Galaxy A50)
  • Facial recognition to unlock your phone works well
  • Beautiful 6.4-inch Full HD+ Infinity-U Super AMOLED display with a high 91.6% screen-to-body ratio, and Corning Gorilla Glass 3 for protection
  • The screen looks sharp and bright, and being an AMOLED display, you will get deep black and vivid colors - sunlight legibility is also pretty good
  • Samsung's One UI 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 a Game Booster tool to the A50s to offer a better gaming experience
  • Other features include an intuitive gesture-based navigation system, and an option to wake up Bixby using the power button
  • Solid mid-range performance with the robust Samsung Exynos 9611 SoC (similar to Snapdragon 660 and Exynos 9610) - the experience is pleasant and smooth throughout including with games like PUBG Mobile and Asphalt 9
  • Good thermal management too - the phone doesn't warm up quickly despite extended game play
  • Decent set of triple rear cameras for the price bracket - a 48MP primary camera with an f/2.0 aperture
  • a second 5MP depth camera with f/2.2 aperture, and a third 8MP ultra-wide lens
  • The quality of the pictures from the primary camera is quite good during daylight and outdoors - the A50s handles high-contrast scenes well and adds the right amount of detail and vibrance
  • Night mode works reasonably ok for low-light situations and doesn’t add unnatural exposure to the scene
  • Portrait mode ("Live focus") works well too especially when capturing outdoor daylight scenes
  • Decent video recording performance with a dedicated 'super steady' mode which allows you to shoot decent “action” videos
  • Decent 32MP selfie camera - in daylight outdoor lighting, selfies clicked turn out quite clear (not so much is low-light though)
  • Overall, this is a fairly good camera setup for this price bracket (though not quite up to the level of the category leaders)
  • Very good battery life with a 4000mAh battery - you will get about 1.5 days of use
  • Stunning, beautiful design, that's a treat to the eyes - Vivo S1 is easily among the most well-designed smartphones to launch this year
  • There is a mesmerising dual tone finish on the metal frame, and a unique 'diamond lattice' design back, that reflects colors in the most interesting ways - this is the kind of smartphone that will definitely get you a lot of Wows from everyone around
  • It not only looks great but also feels great to hold and use thanks to the 2.5D design
  • Fast in-display fingerprint sensor
  • Dedicated Google Assistant button
  • Very good 6.38-inch AMOLED display - you will get deep blacks and punchy colors
  • Funtouch OS UI looks very similar to iOS, and is pretty feature packed, including a good gesture navigation system, and an 'Ultra Game' mode
  • Daily performance is smooth all-round with a Helio P65 processor (similar to the Helio P70, and Snapdragon 660), and most games run well too
  • Decent set of triple rear cameras - 16MP primary + 8MP ultra-wide + 2MP depth
  • The primary camera captures images with fairly good details
  • The depth camera helps with some decent portraits
  • The 32MP selfie camera is decent too, and does especially well with details (though the image softening algorithm is a bit too aggressive)
  • Outstanding battery life with a large 4500mAh battery paired with a low-power MediaTek Helio P65 SoC - you will comfortably clock 2 days of use
  • Bundled 18W fast charger
2-minute Review [Negatives]
  • The fingerprint sensor that sits beneath the display, is a tad bit slow
  • The phone is a smudge-magnet, relatively easy to scratch, and also slippery (so you will want to use a case)
  • This is however not the best performing phone in this price bracket - you will get better CPUs and stronger performance from Xiaomi and Realme phones
  • The camera app is a little bit slow to launch and there is a small shutter lag when capturing photos
  • As is right now the case with most mid-range phones, the wide-angle camera’s photos look fairly distorted, and details are soft
  • Low light performance could have been better, across the board
  • Volume levels of the speaker are a bit on the low side and could have been better - it's a little difficult to hear audio outdoors in a noisy environment
  • Although the phone supports 15W fast charging, but it only includes a 10W standard (non fast) charger - it takes over 3 hours for A50s to go from 0% to 100%
  • On the whole, the A50s, while a pretty decent phone by itself, will find the competition much more intense (than what its predecessor A50 faced) - unless you are a Samsung loyalist, you will want to look at the competition especially from the likes of Realme and Xiaomi
  • It's on the cluttered side though, and does have some bloatware - so the experience is not as clean and simple as stock Android
  • More complex games like PUBG though are not smooth at high graphics settings - and here the phone loses out to the best performing phones of this price bracket that pack the likes of Snapdragon 675, and Snapdragon 710
  • The ultra-wide camera provides for versatility in shot framing, but the quality is average - details are low, and the overall image is muted
  • Low light performance is average too
  • Overall, the cameras are decent for the price bracket, but not really comparable to the top camera phones of this price bracket, like Redmi Note 7 Pro, Realme 3 Pro, Realme X, and even the Vivo Z1 Pro
  • Uses the old microUSB port, instead of the modern USB-C port
  • On it's own the Vivo S1 is a pretty good device, but it faces some real tough competition at the moment - the camera and the performance are not the best for the price bracket, though if your main priorities are a best-in-class design, and excellent battery life, it could still make a lot of sense
Expert Reviews
  1. Two steps forward, One step backward
    fonearena.com in-depth Read Review »
  2. One of the best mid-range Samsung phones yet
    bgr.in in-depth Read Review »
  3. Not a bad phone....but competition like Redmi K20, Nokia 7.2 will make it harder to stand out
    indianexpress.com in-depth Read Review »
  4. Experience with the Galaxy A50s is a mixed bag
    hindustantimes.com in-depth Read Review »
  5. A pretty attractive phone...but it becomes difficult to blindly suggest it, especially for its performance, given the competition (Realme XT, Redmi K20 Pro)
    indiatoday.in in-depth Read Review »
  6. Given its performance and pricing, and, of course, its considerable brand equity, Samsung could have another bestseller on its hands here
    techpp.com in-depth Read Review »
  7. The A50, but with a better camera
    deccanchronicle.com in-depth Read Review »
  8. Comes with its own set of hits and misses...but is still one of the better midrangers Samsung has made till date
    in.mashable.com in-depth Read Review »
  9. A good offering in the mid-range segment but faces a tough competition from rivals
    business-standard.com in-depth Read Review »
  10. gadgets.ndtv.com in-depth Read Review »
  11. gsmarena.com hands-on Read Review »
  12. techradar.com hands-on Read Review »
  13. themobileindian.com hands-on Read Review »
  1. For the asking price, you can get better-equipped smartphones
    gadgets.ndtv.com in-depth Read Review »
  2. If your priority is absolutely best in selfie experience then pick Vivo S1, else its rivals look better
    bgr.in in-depth Read Review »
  3. If you can make your peace with the camera performance and you are not into graphics-heavy games, Vivo S1 is not a bad deal
    indianexpress.com in-depth Read Review »
  4. A good device to consider in this price range
    themobileindian.com in-depth Read Review »
  5. An average midranger with more style and less substance
    in.mashable.com in-depth Read Review »
  6. It’s got the looks, but needs more
    techpp.com in-depth Read Review »
  7. At the price point, there are far more compelling options available
    timesnownews.com in-depth Read Review »
  8. A great midrange device
    deccanchronicle.com in-depth Read Review »
  9. It is a capable phone, and a looker...but there are better deals available
    indiatoday.in in-depth Read Review »
  10. A balanced midrange phone marred by Vivo’s unoptimised user interface
    business-standard.com in-depth Read Review »
  11. gsmarena.com hands-on Read Review »
  12. fonearena.com hands-on Read Review »
  13. ibtimes.co.in hands-on Read Review »
User Reviews
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Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
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