Xiaomi launched the Redmi 3S and the Redmi 3S prime in India. This is the Redmi 3S Prime review, there is not much of a difference between the Redmi 3S and the 3S Prime, apart from the price, RAM/ROM and fingerprint sensor.

Redmi 3S Prime Unboxing

Inside the box you will find the handset, SIM tray ejector pin, data cable, user guide, warranty card and travel charger (5V/2A). Earphone is not included. SAR value : 0.617W/Kg (head) and 0.429W/Kg (body).

Design, Display and OS

The Redmi 3S / Prime is a small handset that will fit really well in most palms and is very comfortable to use. Those who are looking for handset with a 5 inch screen, for them 3S is a great option. This handset is packed inside a metal body, very good build and finishing, curvy design that gives a good grip and feels great.  Redmi 3S weight is 145 grams with battery and dimensions are 69.34 x 139.11 x 8.36 (mm).

Xiaomi Redmi 3S Prime review and unboxing

This is a dual SIM handset you can either use a micro SIM + Nano SIM or micro SIM + micro SD card.

Xiaomi Redmi 3S Prime dual hybrid SIM slot

Screen is 5 inches supporting 1280 x 720 pixels resolution. Color reproduction, viewing angles and touch response are just great. It is not mentioned if the screen comes with any protection, but screen is scratch resistant to some minor extent. If you have a history of damaging screen then it would be better if you use a screen guard.

Xiaomi Redmi 3S Prime review

There is LED notification below the dedicated button on the front and you can select a color from the list. The dedicated button do not light up. This handset is packed with Accelerometer, gyro, magnetic, hall, step, light and proximity sensors.

Redmi 3S / 3S prime is running MIUI 7 based on Android Marshmallow 6.0.1.

Memory and storage

Now depending on the model – on 3S you get 2GB RAM and 16GB eMMC 5.0 ROM. On the 3S Prime there is 3GB RAM and 32GB eMMC 5.1 ROM. OTG is supported. On the first boot (3S Prime) you will get around 1.9GB free RAM and around 22 GB free space. User can use micro SD card of up to 128GB.


This handset houses the qualcomm snapdragon 430 1.4GHz octa core processor – 64 bit coupled with Adreno 505 GPU. Performance was smooth and lag free. In general as well as when playing games the handset performance will impress you and it hardly heats up (max temp I encountered was 37 degrees).


  • Quadrant – 21893
  • Antutu (64 bit) – 42150 | 3D score – 7435
  • Nenamark 2 – 59.9fps
  • Internal storage Speed – Read (134MB/s), Write (82MB/s)
  • Multi Touch – 10 Point


I tried MC5 (Modern Combat 5) and Asphalt 8 – both these games worked great, buttery smooth performance – check video review.


On the back there is a 13MP PDAF camera with f/2.0 aperture, it can shoot FHD videos. Front facing camera is a 5MP shooter. Camera quality is above average check the sample images and video at the end of this review.

Xiaomi Redmi 3S Prime 13MP camera and FP sensor


The Redmi 3S / 3S Prime supports 4G LTE with VoLTE. Sound (speaker / in-call) is loud and clear. I did not face any network issues. 4G, WiFi, GPS and Bluetooth worked well.

There is IR blaster on the front you can use that to control other electronic items like AC, TV etc. The finger print sensor on the back is also pretty fast and accurate. You can unlock directly using finger print sensor, just tap the sensor.

How to use Redmi 3S Prime for monitoring fitness activities

There is built in step counter, just download the Mi Fit app and this smartphone will monitor your physical activities without the need of any fitness (wearable) device. It will count the steps only, but if you are interested in monitoring your heart rate, sleep you will need to buy the Mi band wearable. But yes this handset can count your basic steps right out of the box.

Xiaomi Redmi 3S Prime audio jack, mic and IR port


Another unique thing about the 3S is the 4100 mAh battery that comes built in. One would easily get up to 2 days of battery life with mixed usage. Battery life is excellent. As per my test results you can expect 7 to 10 hours of non-stop moderate to heavy usage.

Xiaomi Redmi 3S Prime Battery Performance (time / battery % drop / estimated battery temperature).

  • Running Benchmark app – 9 minutes / 2% / 36 degrees
  • Asphalt 8 + MC5 game play – 32 minutes / 6% / 37 degrees
  • FHD video playback with full brightness (WiFi /4G on) – 36 minutes / 6% / 36 degrees.

It took me 3 hour 22 minutes to charge the handset using wall charger from 5% to 100%.

Does Redmi 3S prime support fast charging?

I tried a fast charger max 9V/2A it took 1 hour 56 minutes to charge from 43% to 100%. In general using fast charger did not help, it was a bit faster than using the standard travel charger, but the difference does not qualify. Normal charger 3 hours 22 minutes for 5% to 100%, when using fast charger estimated 2:45 to 3:00 hours from 5% to 100%.


The Redmi 3S Prime no doubt is a very good handset with a very good price tag, however it does not come with fast charging support and the Snapdragon 430 hardware is not as powerful as the Snapdragon 650 that Redmi Note 3 is using.

Redmi 3S prime cannot play 4K videos smoothly, Redmi Note 3 can. Also when you compare the benchmarks there is a good difference. Having said that the 3S is still a very good buy, you will hardly notice any difference in performance with you daily usage though technically Note 3 is powerful.

The only criteria when deciding between the Redmi 3S and the Redmi Note 3 should be the screen size – you decide if you want a handset with 5 inch screen or 5.5 inch screen. 3S is Batman’s robin (Batman = Redmi Note 3).

There is not much off a price difference between the 3S Prime and the Note 3 (2GB), makes sense to go for Redmi Note 3, however the Redmi 3S without finger print sensor for Rs. 6,999 is excellent buy in case you ignore the finger print sensor.

Rating : 4 out of 5

Xiaomi Redmi 3S price starts from Rs. 6,999.

Image Gallery

Redmi 3S Prime video review

3S Prime rear camera sample

Front camera sample

FHD video shot using the Redmi 3S Prime handset

Published by Gogi Rana

Founder and Chief Editor - gogi.in

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  1. Gogi Bro, My friend bought redmi 3s 2 days before after go through your review, after installed basic applications like fb,whastapp etc, it shows available ram only 7.8 out of 16 gb ram. why? is it sufficient?
    Pls reply.

      1. Mentioned wrongly as ram instead of rom, any how wow, what a lightning reply, really i didn’t expect, thank you very much brother. now my doubt cleared by your answer – thanks.

    1. It’s really frustrating in redmi 3s, you used it one month and see the internal memory less than 1gb for sure as I facing, no app transferable to memory card, hybrid sim, without gorilla glass, without any resist levels of water, many things which are missing & all that make you cry after some time..Price & good battery backup 3s otherwise so called headache. Moto e3 power somewhere better than this even lesser updates.. Peace of mind lastly all have to want.

  2. The phone is heating up as most of the metal android devices with 4g on and some half an hour of gaming means your device will have a temp of around 42 43 degree Celsius in low/medium brightness.. And I have a question is Redmi Note 4 a heater like this?

  3. Hi, Gogi which phone is better in camera, gaming, performance – coolpad mega 2.5D or redmi 3s?

  4. I am having calling issues with redmi 3s prime, when I make call people can hear my voice but I cant here their voice. Is it issue with Jio volte or something else with miui or hardware. Please update if someone have any information, thanks.

  5. I want to buy a 4G phone with good camera battery and performance under 8000.which should i buy lenovo vibe k 5, coolpad note 3 lite or from redmi.

  6. Gogi which phone is best (1) redmi note 3s prim or(2) galaxy on7 pro, I am just a normal user of smartphone, I don’t play heavy games, but I want a better camera, that can give me a better experience of clicking photos or shooting videos.

  7. Now, isn’t the lenovo k6 power better option? Camera and display reported to be better in K6 than 3s prime

  8. Can we move application on sd card in 3s prime and note 3??
    Plz tell me im so confused abt these two phones

  9. Hi..Gogi Sir & Everyone
    I want purchase redmi 3s 17th Aug
    so please suggest me which phone colour good in option 1)Dark Grey 2) Silver, 3)Gold Colour..?

  10. Gogi sir, do not you think xiaomi has priced REDMI 3s prime by atleast rs.500, consider pricing of redmi note 3 2gb/16gb which has full HD screen 5.5 in display with sd650. Moreover when coolpad note 3 is there which is selling now at rs.8500. wouldn’t it be fair to say that coolpad note 3 is still as better buy than redmi 3s prime in every respect other than battery life.

  11. Sir, i want an android phone under 10000. I am going to canada next month and i want a phone in which i can use a canadian sim.can you please suggest me one because i already have an iphone but i need good andriod phone to download things

        1. I think it should these are the bands supported – GSM – 900, 1800; WCDMA – 900, 2100; 4G LTE (TDD) – Band 40, LTE (FDD) – Band 3/5
          you can check if the same is used in Canada.

  12. This is a sweet phone. I’m seriously considering it for replacement of le 1s eco as it supports volte. But charge time of 3 h 22 m is too much. Also no backlit keys is minor con. Disappointed 🙁

  13. OT
    hi, Play store app in my Redmi 2 prime is not working after MiUI (5.1.1) update, do anybody have a solution.
    sorry for the OT.

    1. go to app info page for play store,clear data and force stop,reboot device ,and check if not worked sign out of google account and sign in again.

  14. Hi,

    I recvd my 3s yesterday and after almost 6 hrs if usage I surely say that it worth a buy.

    Touch is gr8 already got an update for MIU. camera part has to be improved but overall the package is gr8 the battery back up is superb

  15. Timely review sir. Was planning to buy it on 17/8. In my opinion though the performance is good it is difficult to handle n use a 5.5 incher. So going with 3s prime.

    1. Yes exactly my point, among 3S and Note 3 the only deciding criteria should be the screen size.

      1. if you had a fast charger,please try with as at some article says it support quick charge 2.0

  16. hi gogi .. nice review…….

    i have never seen u reviewing OPPO phones.. Oppo is currently number 1 company in china..

    Please try to review latest model F1s.. hope u review F1s

    usally people get bored with mi lenovo motorolo.. they rule online market…

  17. mobile phones were made to make our life easier…but see wtf is happening now..flash sale,we have to see tons of reviews..ufffff

  18. Same charger of 2 amp of Lenovo vibe p1m of 3900 mah charge in 2.5 hour. But may be they provided better designed quick charger.

  19. Redmi 3s 16gb at 7k is a steal buy.
    Redmi 3S prime’s camera is better than Redmi Note3 and Mi max.
    But i think
    If you wanna invest 9k then go for redmi note3 16 gb at 10k.
    1gb ram doesn’t make any difference and you can get 32 gb samsung evo+ memory card around Rs500 which makes it 48gb memory at 10.5k.

  20. Thanks Gogi ji.. I always find your reviews very useful.. Please throw some light on sound output from speaker as many people are complaining about low volume output.

    And please compare reshmi note 3 and 3s with regards to camera performance, screen clarity and sound output.. Waiting for your thoughts as i am confused between these two handsets..

    1. Have already mentioned about sound. It is as loud as on redmi note 3. When I do review I try every thing that I did on other handset. If I notice something I will surely mention.

  21. Hello sir I m your daily viewer
    If I want to buy best smart phone under 10000 rs. With best spec. So this good or not ? And if not so please suggest me best smartphone under 10k
    I am play average games like clash of clan ,boom beach , MC3
    I AM watch movies around 3 to 5 hour around
    Less calling, good for chat
    Thanks for helping and some of time

    1. Go for redmi 3s prime cause continue video looping is 14 hrs which is better than redmi note 3(12 hrs) cause of screen size and low resolution..go for it..

  22. How is camera quality compared to mi4i, because I found note 3 camera is inferior to mi4i when kept side by side.

  23. I mean in redmi 1s on mokee rom supports quick charge for 0.5 amp xiaomi charger but on CM13 it charges in 3 hours @gogi.So redmi 3s is not charging faster according to 2 amp charger @gogi?

    1. 3s performs way better than CN3P. It plays all the games well and moreover it has got a snapdragon processor and do i need to tell about miui? I am using 3s prime. You cant see any difference bw HD & FHD on such a small screens.

  24. Quick charger 1 is supported or not? @gogi as I have to buy redmi 3s 16 gb. Is it software bug or quick charger 1 cannot charge in 2 hours as it 4100 mah. I know how some custom os support quick charger.

    1. If you just Google or go to Qualcomm site,it is mentioned that SD430 does support quick charge 3.0 though Xiaomi did not provide fast charger to save cost.u can buy fast charger.u can charge upto 80% in half an hour as per quick charge 3.0

  25. Loved it.. Just got ma handset and as gogi has said.. Impressive ..It’s a bloody decent phone for that price tag

  26. Dear Gogi,

    Which phone is better Xiaomi Redmi 3S Prime or Asus Zenfone Max octa core?
    Especially, in terms of 1.) Camera and 2.) Performance

    I wish to buy either of these 2 phones. Please do let me know your opinion.

    1. R3SP is way better than AZM by miles. 3s can handle gaming much better because of better gpu.

      1. Asus Zenfone Max
        Qualcomm Snapdragon 615 Octa-core (4×1.5 GHz Cortex-A53 & 4×1.0 GHz Cortex-A53) GPU Adreno 405 coupled with 2 gb RAM

        Redmi 3S Prime
        Qualcomm Snapdragon 430 CPU Octa-core 1.4 GHz Cortex-A53 GPU Adreno 505 coupled with 3 gb RAM

        which one gives better, lag free performance?

  27. Gogi sir, which camera quality is better Redmi note3 or3S prime. Whether display of 3S prime is better than that of note3?Pl.answer.

  28. Gogi ji has the sale of redmi 3s started in india…. I really want to buy it. Will it be a open sale or flash sale in fk !!?