Our Opinion

The Xiaomi Mi A3 (6GB RAM, 128GB) is a slightly better phone than the Vivo S1 (4GB RAM, 128GB), and is also slightly better value for money. What should you buy? Go for the Xiaomi Mi A3 (6GB RAM, 128GB)!

Vivo S1 (4GB RAM, 128GB)  Xiaomi Mi A3 (6GB RAM, 128GB) 
Vivo S1 Xiaomi Mi A3
Buy Now Buy Buy
Excellence Score
30.6
32.0
Value for Money Score
62.3
64.0
Price ₹ 16,890 onwards ₹ 17,190 onwards
Launch Date (India) Aug, 2019 Aug, 2019
Expected Launch Date N/A N/A
Smartphone OS Android 9.0 PieLow likelihood of getting updated to next Android version Android 9.0 Pie, Upgradeable to Android 10Expected update to next Android versionAndroid One series
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.38 inches 6.01 inches
Screen Resolution 1080x2340 pixels (~ 404 pixels per inch) 720x1560 pixels (~ 286 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes Yes, Corning Gorilla Glass 5
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED 2.5D Curved Glass
Full Physical QWERTY Keypad
Processor 2 GHz 2 GHz
Processor Type Octa Core Octa Core
Processor Name MediaTek Helio P65Ranked #41 in Mobile Processor Benchmarks Qualcomm Snapdragon 665Ranked #44 in Mobile Processor Benchmarks
GPU Mali-G52 Adreno 610
RAM 4 GB 6 GB
3G Yes Yes
4G Yes Yes
5G
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port microUSB USB-C
Primary Camera 16MP + 8MP + 2MP 48MP + 8MP + 2MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 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 48MP: Sony IMX586 Sensor; 1.6um Pixel Size; 6p lens; F/1.79 Aperture; 1/2" Sensor Size; PDAF, 8MP: Ultra wide-angle camera; 118° Field-of-View; F/2.2 Aperture, 2MP: Depth Sensor, AI Portrait mode, Steady Handheld Night Photography, Video: 2160p@30fps; 1080p@30/60/120fps; 720p@240fps/120fps, EIS
Secondary Camera 32MP 32MP
Secondary Camera Features F/2.0 Aperture, HDR, Panorama, Live Photos, Gender detection, Face Beauty, Portrait, AR Stickers, Video Face Beauty, AI Selfie Lighting, AI Face Beauty F/2.0 Aperture, 1.6um Pixel Size, HDR, Panorama selfie, 5p lens, Video: 1080p@30fps
Internal Memory 128 GB 128 GB
Expandable Memory Slot Yes, up to 256 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 (Hybrid SIM slot)
Thickness 8.13 mmMedium 8.5 mmMedium
Weight 179 gmMedium 173 gmMedium
Width 75.2 mmOk for one-handed use 71.9 mmComfortable for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant Yes, Splash Resistant (P2i Coating)
Battery Capacity 4500 mAh 4030 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 Fast Charging Yes, 18W Quick Charge 3.0
Included Fast Charger Yes, 18.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features In-display Fingerprint Sensor; Noise Filtration In-display Fingerprint Sensor; UFS 2.1 Storage; Noise Filtration
2-minute Review [Positives]
  • 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
  • Premium build & gorgeous design: Dual Gorilla Glass 5 build, with an attractive, striking gradient design
  • Modern front panel, with a small notch
  • Compact form-factor - fairly easy to use one-handed
  • Decent, reasonably accurate under-display fingerprint scanner (it's not the fastest though)
  • Large, high-contrast AMOLED display
  • Being part of the Android One series, you get a simple/stock Android experience, along with a promise of minimum 2 years of Android updates
  • With the powerful Snapdragon 665 at the core, you get smooth dependable performance all-round - it's great for gaming too
  • Very good triple camera setup on the rear (48MP primary + 8MP ultra-wide + 2MP depth)
  • Images turn out with high level of detail and true-to-life colors - the contrast is also excellent, while the dynamic range is notably wide
  • 8MP images with the ultrawide-angle camera are decent too - its per-pixel quality is much lower than the main camera, but the colors are still nice, and noise is minimal
  • Portrait mode works well - shots are detailed, with excellent subject separation and convincing faux blur
  • Night mode works decently well too
  • Excellent selfies too, from the 32MP selfie camera - there is enough detail, the colors are nice, and the images are sharp enough
  • Good video recording performance too - both 4K and 1080p videos are sharp and detailed, contrast is excellent, color rendition is quite nice and true to life, and the dynamic range is decent - at 1080p 30fps, there is also EIS, which works well
  • Overall, the Mi A3 is easily one of the better camera phones in this price bracket, going head-to-head with excellent camera phones like the Redmi Note 7 Pro
  • Very good speaker - loud, with fairly rich and deep sound
  • Very good battery life with a large 4030mAH battery - you will comfortably get 1.5 days of use
  • Fast charging (Quick Charge 3.0) support, with up to 18W charger
  • Overall, the Mi A3 is an all-round good Android One phone, that does well on most counts, and additionally packs a stock Android experience (plus promised updates) - for a lot of users, who value a stock Android experience, and whose main consumption on the phone is images & video, it will be a good bet
2-minute Review [Negatives]
  • 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
  • The 720p resolution is on the low side though for a PenTile AMOLED display of that size, and this is the only weak-ish point of the Mi A3 - the screen is not the most ideally suited for long reading or browsing
  • The phones ships with a lower 10W charger though, that gives still decent, but not the quickest charging speeds - it recharges from 0 to 28% in 30 mins, while a full charge takes about 150 mins
  • But if you tend to do a lot of long reading on your phone, then you might want to consider higher resolution phones in this price bracket (and there are many good ones out there)
Expert Reviews
  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 »
  1. Gets many things right ...but the 720p screen makes the Mi A3 more of a niche device as it is best suited for gaming and videos instead of browsing and reading
    gsmarena.com in-depth Read Review »
  2. Two steps forward, one step back
    gadgets.ndtv.com in-depth Read Review »
  3. A good Android One phone...but the display is a compromise
    fonearena.com in-depth Read Review »
  4. Offers a lot of bang for the buck, but competition in this price segment is fierce to say the least....this one is for the purists
    bgr.in in-depth Read Review »
  5. Pretty good value smartphone...a safe bet for people looking for a cheap and cheerful smartphone that comes with all the right features, and none of the hassle
    androidauthority.com in-depth Read Review »
  6. A good choice for an affordable phone
    trustedreviews.com in-depth Read Review »
  7. Worth buying if you want a stock Android phone in this price bracket...but there are compromises too
    indianexpress.com in-depth Read Review »
  8. The 720p display really complicates what is otherwise a very agreeable Android phone
    news18.com in-depth Read Review »
  9. An otherwise solid phone with one major drawback - a 720p display
    androidcentral.com in-depth Read Review »
  10. Xiaomi Mi A3 has everything that should be there in a mid-segment smartphone, however, the display resolution could be a dampener for some
    business-standard.com in-depth Read Review »
  11. Good but not great
    indiatoday.in in-depth Read Review »
  12. A very good device for Android One fans..but if you do not value stock Android, then consider alternatives
    techpp.com in-depth Read Review »
  13. A pretty solid offering that offers a lot for its price
    in.mashable.com in-depth Read Review »
  14. Buy the Mi A3 if you want an all-rounder of an Android One smartphone that is priced just right
    firstpost.com in-depth Read Review »
  15. Offers great value...a rival to the Google Pixel 3A in photography and performance, but at a significantly lower price
    techadvisor.co.uk in-depth Read Review »
  16. notebookcheck.net in-depth Read Review »
  17. techradar.com hands-on Read Review »
User Reviews
  1. Flipkart4.5 767+ reviews »
  1. Flipkart4.2 1,224+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
Individual Review

Vivo S1 Review –

Gadgets 360

Top Pick

Individual Review

Full review: Xiaomi's Mi A3 is confusing as hell...

Android Authority

Top Pick

Full Review

Vivo S1 Review –

Gadgets 360

Full Review

Full review: Xiaomi's Mi A3 is confusing as hell

Android Authority

Did you find phonecurry useful in your phone search? Drop us a testimonial, or Tell us how we can improve