Asus Zenfone 3S Max Review: Best Battery?


Recently we had review Zenfone 3 Max which is very good smartphone apart from its price part. Now we are here with an another review of Asus Zenfone 3S Max which is the upgraded variant of Zenfone 3 Max.

Asus launches Zenfone Max series whose main aim is battery and as expected these smartphones are doing well with the battery life so far.

Asus Zenfone 3S Max Review

Did Asus is continuing its great battery smartphones game by launching Asus Zenfone 3S Max? It might be surprising to know the answer

Well, you might be surprised to know my answer. There are many things apart from battery life in a smartphone which must be considering while buying a smartphone. So, let’s check that in our full review (Not only Battery review :p ).


Display5.2-inch (1280 x 720)
ProcessorMediatek MT6750
Storage32GB (expandable up to 2TB with microSD card)
Primary Camera13MP with Duel-tone LED flash
Secondary camera8MP
Fingerprint ScannerYes
Expandable Storage Yes (Hybrid)
ConnectivityDuel Sim, 4G VoLTE
Operating SystemAndroid Marshmallow 7.0 (Zen UI)

Asus Zenfone 3S Max Review


Asus Zenfone 3S Max has unibody metal design excluding the plastic at the top and bottom of the smartphone. It feels premium and solid in hand and it will never look cheaper in any way. I liked the fact that the design is well made and buttons at the right are very tactile and easily recognizable.

Asus Zenfone 3s Max front

At the front, we have the display which is covered the 2.5D glass with an opening for speaker and fingerprint scanner. Yes, the fingerprint scanner is now at the front and its a button. The thing I didn’t like is it’s not an active fingerprint scanner which means your fingerprint won’t be recognized until you press the button. It has the proximity sensor and a LED light to the left of the earpiece and its looks great.

Asus Zenfone 3s Max rear

On the back, we have a 13MP camera with f/2.0 and a dual LED flash and secondary microphone.

Asus zenfone 3s max design


On the top, we have a headphone jack and speakers are at the bottom side of the smartphone along with micro USB port. On the left it has sim tray and on the right, it has volume and power buttons.

Overall, Zenfone 3S max design is very impressive and easy to hold in hand as it has a 5.2-inch display.


Asus Zenfone 3s Max has a 5.2-inch display with a resolution of 1280×720 which is good enough for a 720p resolution but considering its price its a big disadvantage.

The display is good but you can’t expect great colors and vividness of a 1080p display. All smartphones at this price range will provide a 1080p display which is a normal standard these days.

Asus Zenfone 3s max display

They may be thought that as they are decreasing the screen size it won’t affect display quality by using a 1080 x 720p resolution and another thing it might increase the battery.

I will explain an about battery in battery review but overall the display is good and bright but not great. You will be satisfied with the display but the price should have been low.


Asus Zenfone 3S Max sports a 13MP rear camera with Dual LED flash and 8MP front camera which 85 degrees wide-angle camera.

The rear camera is average and lacks in sharpness. I also noticed that color accuracy is not that good in low lighting conditions and there is a lot of noise in low light.

Asus Zenfone 3s max camera

You need to use night mode to take some good shots but it includes noise also but not huge. Outdoor light shots are very good and indoor shots are average.

The camera should have been better considering the price. If your main preference is camera then you should find the better option such as Moto G5 Plus or Honor 6X.

Coming to the front camera, it is very average and not that good. You will not able take a perfect shot with the front camera and there is beautification mode for a front camera which smoothens your skin which makes images some what better. Overall, the front camera is average for selfies.

The interesting thing I noticed in videos is, you don’t have any stabilization for the videos and in my previous review of Zenfone 3 Max there is stabilization for 720p videos. As I said previously the video quality is ok, and you need to be careful while taking videos when moving as there is no stabilization.

You can check all the Asus Zenfone 3S Max camera samples (front and rear) in full resolution in three modes (Auto, HDR, SRES) here.


Now, Zenfone 3S Max runs Android 7.0 with Zen UI on top it and everything are same as previous Zen UI with nougat features such as multi-window, improved settings page, bundled notifications and some tweaks.

Everything is smooth until the device gets pushed heavy with multitasking and games as it sports a MediaTek processor. I sometimes got a restart of the device for no reason while using.

You will get all the features such as Kids mode, easy mode and blue light filter which you can expect from a Zenfone :).

Overall, software is good and the performance could have been better if the processor has been changed. We even got the average performance because of te use of 720p display for a MediaTek processor.


As i already said, the performance is ok considering it has a MediaTek chipset and we can’t expect a tremendous performance with the heavy Zen UI and average processor.

I played some games on it and most of the games are played well with some lags, and the best part is it never overheats but the gaming performance its average.

If you are a heavy user who multitasks and play games then i will never recommend this device as it has various performance issues but if you are a moderate user then it won’t disappoint you.


This is the most interesting and awaited part of all because Zenfone 3S Max has a massive 5000 mAh battery which is really good but waits.

It has an another advantage of having a 720p display along with 5000mAh battery, and many expect an incredible battery life by seeing (Even me :D).

Don’t go into dreams, the battery life is good but considering the things i said earlier i felt battery life is average which is almost equal to the battery life of Zenfone 3 Max which has a 4000mAh battery.

It doesn’t support fast charging and it has massive 5000mAh battery and surprisingly it charged within 3.5 hours from 20% to 100%. This is good and improved.

Asus zenfone 3s max battery

I got a screen-on-time of around 6 hours with moderate usages such as playing games, videos and social networking which is good but i expected even better battery life.

Overall, the battery life is good and has been better and you will never disappoint with the battery life :).


  • Design
  • Battery life


  • Camera
  • Performance

Final Verdict

Overall, Asus Zenfone 3S max is the phone for battery lovers but you can’t expect incredible results in the battery as it is good compared to many in this price but not great considering its battery size. If you are average user and your priority is battery and have good software then I can recommend this but there are many best smartphones under 15000 which are better than like Redmi Note 4 and Moto G5 Plus.

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