Our Opinion

The Infinix S4 (3GB RAM, 32GB) is a slightly better phone than the Infinix Smart 3 Plus, and is also slightly better value for money. What should you buy? Go for the Infinix S4 (3GB RAM, 32GB)!

Infinix S4 (3GB RAM, 32GB)  Infinix Smart 3 Plus 
Infinix S4 Infinix Smart 3 Plus
Buy Now Buy Buy
Excellence Score
23.1
19.3
Value for Money Score
70.7
66.6
Price ₹ 7,999 onwards ₹ 6,999 onwards
Launch Date (India) May, 2019 Apr, 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 PieLow likelihood of getting updated to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.21 inches 6.21 inches
Screen Resolution 720x1520 pixels (~ 271 pixels per inch) 720x1520 pixels (~ 271 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes
Display Type IPS LCD IPS LCD
Display Features 2.5D Curved Glass 2.5D Curved Glass
Full Physical QWERTY Keypad
Processor 2 GHz 2 GHz
Processor Type Octa Core Quad Core
Processor Name MediaTek Helio P22Ranked #67 in Mobile Processor Benchmarks MediaTek Helio A22Ranked #89 in Mobile Processor Benchmarks
GPU PowerVR GE8320 PowerVR GE-class
RAM 3 GB 2 GB
3G Yes Yes
4G Yes Yes
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port microUSB microUSB
Primary Camera 13MP + 8MP + 2MP 13MP + 2MP + Low Light Sensor
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (Full HD) Yes (Full HD)
Other Camera Features 13MP: F/1.8 Aperture; 1.12um Pixel Size, 8MP: 120° Ultra-wide Lens; F/2.2 Aperture; 6P Lens, 2MP: Depth Sensor, AI Portrait, AI HDR, AI Beauty, AI Bokeh, Night mode 13MP: F/1.8 Aperture; PDAF, Auto Scene Detection, AR Stickers, Portrait Mode, HDR, AI Beauty, AI Bokeh, Night mode, Sports mode
Secondary Camera 32MP 8MP
Secondary Camera Features 1/2.8" Sensor Size, Samsung S5KGD1 Sensor, F/2.0 Aperture, 0.8um Pixel Size, 80° Field-of-View AI Face Beauty, Screen Flash, AI Beauty, Portrait Mode, HDR
Internal Memory 32 GB 32 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
Thickness 7.9 mmMedium 7.8 mmMedium
Weight 155 gmMedium 148 gmLight
Width 75.0 mmOk for one-handed use 76.0 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 4000 mAh 3500 mAh
Battery Standby N/A 600 hrs
Battery Standby (3G) N/A N/A
Battery Talktime N/A N/A
Battery Talktime (3G) N/A N/A
Fast Charging Support
Included Fast Charger
Other Battery Parameters N/A Talktime (4G): 25 hrs, Audio Playback Time: 34 hrs, Video Playback Time: 10 hrs
Fingerprint sensor Yes Yes
Other Features Noise Filtration Noise Filtration
2-minute Review [Positives]
  • Impressive sleek design, with a glossy gradient finish at the back
  • Quite lightweight at 155 grams, and due to its compact size, it fits into the hand perfectly
  • Fast fingerprint scanner - apart from unlocking the phones, it also allows you to take photos, accept calls, browse through pictures, and dismiss alarms using gestures
  • Fast face unlock
  • Modern, vibrant, 6.26-inch water-drop notch display, with good viewing angles
  • Sunlight legibility is especially good, unlike many other budget phones
  • Eye care mode allows for a comfortable reading experience at night
  • Infinix's custom XOS UI has a decent set of additional features, including XClub (customer forum), XHide (to hide pictures, videos), Phone Master app (to free up RAM to boost performance), gesture support, and a smart panel to the left of the first home screen
  • You can also do plenty of UI customisations with the XTheme app
  • Decent performance in day-to-day use with a modest Helio P22 (similar to Snapdragon 625) at the core
  • Decent triple camera setup on the rear - 13MP primary camera + 8MP ultra-wide camera + 2MP depth camera - one of the rare phones to offer a triple camera setup in this price bracket
  • Daylight shots are above average with good clarity and overall colour reproduction - the phone also does an excellent job of capturing macro shots
  • Auto-focus is fast
  • The quality of the wide-angle camera is decent too, and it gives you interesting picture framing options, especially when shooting landscapes
  • Good 32MP front camera - takes clear and crisp selfies - and is pretty decent in indoor lighting as well
  • Both rear and front cameras also have a decent bokeh mode
  • Overall, this is one of the best camera setups in this price bracket
  • Very good battery life with a large 4000mAh battery - you can expect a day and a half of use with moderate usage
  • Overall, despite a modest processor, the phone is one of the better contenders in the entry-level budget segment - with 2 key USPs - a good battery life and a good camera setup - if you are a light smartphone user, and not into gaming, it's certainly worth considering - if however you are more of a power user, you should look at alternatives from Xiaomi and Realme
  • Good looking, premium design, with a glossy mirror finish on the back panel
  • Lightweight
  • Fits comfortably in the hand
  • Decent, fast rear fingerprint sensor
  • Good, modern, water-drop notch, 6.21-inch display - it offers some good colour reproduction and viewing angles
  • XOS UI is pretty decent, works smoothly, and comes loaded with some interesting features
  • Decent day-to-day performance with a Helio A22 at the core (similar to Snapdragon 615) processor - light users will be happy (though power users will want to look elsewhere)
  • Triple camera setup at the rear, which is a rarity for this price segment - includes a primary camera + depth sensor + low-light sensor
  • Decent daylight performance from the rear camera set, with good detailing
  • Macro shots are pretty good too
  • Decent selfie camera too - the selfies look natural and have a decent amount of detail with punchy colours
  • For this price point, this is one of the better camera phones
  • Good battery life with a 3500mAh battery - you will comfortably get a day of use
  • Decent charging speed - the phone can be charged from 0 to 100 per cent in about 1 hour and 30 minutes
  • Overall, the Infinix Smart 3 is an attractive choice for this price bracket, if you are fine with just-about-ok performance, and want to instead prioritise the camera
2-minute Review [Negatives]
  • Due to its glossy finish, the phone attracts lots of smudges at the back panel (though Infinix does thankfully ship a TPU case in the box)
  • There is unfortunately plenty of bloatware too, as is often the case with such custom UIs
  • There is plenty of competition though that packs better processors in this price bracket (especially from Xiaomi and Realme), and will give much smoother gaming performance - so if you are a power user, then the S4 might not be your best choice
  • Low light performance of the rear cameras is average
  • The back panel is prone to smudges (though thankfully, the company has given a bundled protective case)
  • There is plenty of pre-installed bloatware though, a problem that plagues a lot of such custom UIs
  • Multi-tasking performance is limited though because of the limited 2GB of RAM - again, the device is only meant for light users
  • Both the rear and front cameras have significant shutter lag though, so if you don't keep a steady hand, you can sometimes end up with blurry photos
  • Low light performance of the rear camera is only average (even with the low-light sensor)
  • If you do care more about performance more, look at options from Xiaomi or Realme instead
Expert Reviews
  1. The camera is where Infinix has really outdone themselves...If you’re after better performance though, you should look at the Redmi 7
    economictimes.indiatimes.com in-depth Read Review »
  2. One of the better contenders in the entry-level budget segment
    themobileindian.com in-depth Read Review »
  3. If you are looking for a good looking device with a decent camera at a budget price, the Infinix S4 might be a good option for you
    business-standard.com in-depth Read Review »
  4. The handset to own if you want a great media consumption experience and capable cameras without breaking the bank
    deccanchronicle.com in-depth Read Review »
  5. gadgets.ndtv.com in-depth Read Review »
  6. bgr.in hands-on Read Review »
  1. If you are willing to put up with average performance and camera is your main criteria, then the Infinix Smart 3 Plus could be a decent pick for the price
    gadgets.ndtv.com in-depth Read Review »
  2. Struggles hard to play the value for money card
    economictimes.indiatimes.com in-depth Read Review »
  3. Surely looks like an interesting proposition for the price
    themobileindian.com in-depth Read Review »
  4. One of the better contenders in the entry-level budget segment
    business-standard.com in-depth Read Review »
  5. bgr.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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