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ASUS Zenfone 3 – Full info & Specification

Last Updated On: September 17, 2016

ASUS’ ZenFone 3 is the lead model, and namesake of the new ZenFone 3 series. It is a feature-packed smartphone that brings premium design and empowering performance to everyone. Built around a gorgeous 5.5-inch Full HD (1920 x 1080) Super IPS+ display with up to 600cd/m2 brightness, the ZenFone 3 delivers an incredible visual experience that makes apps, videos, and games look their best. With a narrow bezel, the ZenFone 3 provides a 77.3% screen-to-body ratio for a maximized viewing area in a slim and compact body.ASUS Zenfone 3

The front and rear of the phone are covered with scratch-resistant Corning Gorilla Glass 3 that is gently contoured to make the edge of the phone completely smooth. The ZenFone 3 is equipped with a 16MP camera with ASUS “TriTech” autofocus that automatically selects 2nd generation laser, phase detection, and contrast /continuous autofocus to achieve precise focus in just 0.03 seconds, resulting in sharp images in any condition.

The ZenFone 3 is the first smartphone worldwide to be powered by the new Qualcomm
Snapdragon 625 octa-core processor — the first Snapdragon 600 Series processor with 14nm FinFET process technology that increases power efficiency by 35% compared to the last generation Qualcomm Snapdragon 617 processor, resulting in dramatically improved battery life.

It also has an integrated X9 LTE modem, and 802.11ac MU-MIMO Wi-Fi connectivity, PC-grade graphics and 4GB RAM that together deliver outstanding mobile performance with improved efficiency and battery life. The ZenFone 3 has a built-in fingerprint sensor that’s perfect.


  • The ZenFone 3’s industrial design is a radical change from that of the previous generation ZenFone 2
  • The ZenFone 3 has leading features for its price range including the brightest 600nits screen, the highest
  • 16 megapixel camera resolution, a 4-axis photo OIS that allows slower shutter speeds of up to 4 stops (compared to 3 stops of other smartphone cameras), the use of three focus technologies (including the longest 1.5m range laser focus), the only 4K video recording capability, and the highest screen to body ration of 77.3%
  • The ZenFone 3’s PixelMaster 3.0 cameras are one of the world’s first smartphones to use three focus
    technologies (TriTech) to achieve fast focus
  • The ZenFone 3 is the world’s first smartphone to use the powerful, yet efficient Qualcomm Snapdragon 625 14nm octa-core processor that increases power efficiency by 35% compared to the last generation Qualcomm Snapdragon 617 processor, resulting in dramatically improved battery life

ZenFone 3 Series

The ZenFone 3 is part of the new ZenFone 3 series which includes the ZenFone 3 Deluxe and ZenFone 3 Ultra. All ZenFone 3 series models have unique groundbreaking designs and features that include class leading cameras which allow users to take better photos, as well as the latest processors that make them powerful entertainment devices.

Zenfone 3

The mainstream model of the series with the key features of the other ZenFone 3 models, but its own distinctive design and priced to deliver great value.

Zenfone 3 Delux

The ZenFone 3 Deluxe is the elite model of the range, featuring the very best components, wrapped in the most exquisite full-metal chassis with invisible antennas. It is for discerning buyers who want
uncompromised performance and the very best smartphone technologies in a luxurious package.

Zenfone 3 Ultra

The entertainment-focused smartphone of the series, with a large display and rich multimedia features, including a 4K TV-grade video processor, and other meaningful “world’s firsts” that make it the
ultimate entertainment / gaming mobile device.


ZenFone 3 Model ZE520KL (5.2”) / ZE552KL (5.5”)
Buyer profile – Feature-packed, for users who want premium features at a great price.
Operating System – Android 6.0 Marshmallow With ASUS ZenUI 3.0
Display – 5.2 / 5.5-inch Super IPS+ LCD, 1920×1080 75.6% (5.2”) / 77.3% (5.5”) Screen to Body Ratio, up to 600nits brightness
Construction – Front and rear Corning Gorilla Glass panels with “2.5D” contoured edges and metal frame
Processor – Qualcomm Snapdragon 625 Octo-core – 14nm 8×2.0GHz ARM Cortex A53
GPU – Adreno 506
RAM / Memory – 3GB RAM / 32GB Memory (5.2”) & 4GB RAM / 64GB Memory (5.5”)
Main Camera sensor – 16MP ASUS PixelMaster 3.0 Camera (Sony IMX298 sensor)
Main camera features – ASUS PixelMaster 3.0 camera: f/2.0, 6-element Largan lens
0.03 second TriTech Autofocus (Contrast / Phase / 2nd Gen Laser) | 4-axis photo OIS | 3-axis video EIS| Color correction sensor | Dual tone LED flash
Front Camera – 8MP, 84-degree wide view
Wireless – WIFI 802.11ac Up to Cat 7 LTE | 5G/2.4G | MiMO Wi-Fi
Fingerprint sensor – Rear sensor | 5-finger registration / 360 degree recognition / 0.22 second unlock
Connectivity – 4G with support for Reliance Jio VoLTE | Bluetooth 4.2 | Type-C USB 2.0
SIM / SD slots – Slot 1: Micro SIM (4G) | Slot 2: Nano SIM (3G) or Micro SD (supports up to 2TB)
OS  – Android M – 6.0 with ZenUI 3.0
Audio – Hi-Res Audio support | New 5 Magnet Speaker | NXP Smart AMP
Battery – 2650 mAh (5.2”) | 3000 mAh (5.5”)
Dimensions – 146.87 x 73.98 x 7.69mm (5.2”) | 152.6 x 77.4 x 7.7mm (5.5”)
Colors – Shimmer Gold / Sapphire Black / Moonlight White
Weight – 144 grams (5.2”) | 155 grams (5.5”)
Accessories – USB Cable Type C, ZenEar, Adaptor, User Manual & Warranty Card
Product website – http://www.asus.com/Phone/ZenFone-3-ZE520KL/ (5.2”)
https://www.asus.com/Phone/ZenFone-3-ZE552KL/ (5.5”)


Highlights of Zenfone 3

Agility in Performance

  • Qualcomm 14nm Snapdragon 625 2.0Ghz Processor with 4GB RAM
  • Fingerprint Security Sensor
  • New 5-Magnet Speaker with High-Res Audio

Beauty Inside and Outside

  • Front and Rear Corning® Gorilla® Glass with “2.5D” contouring
  • 5.5” FHD Super IPS+ Display with 600nits Brightness
  • 2.1mm Slim Bezel and 77.3% Screen to Body Ratio

Clarity in Every Shot

  • 16/8MP Rear & Front PixelMaster 3.0 Cameras
  • World’s Best 0.03 Second TriTech AF Camera
  • 4 axis OIS/3 axis EIS/Color Correction Sensor

Design specifics

  • Front and rear Corning Gorilla Glass 3 panels with “2.5D” contouring at the edges
  • Finely sandblasted, slim 6.16mm all-round metal frame
  • 7.7mm overall side profile
  • Rear fingerprint sensor
  • Four colors available: Shimmer Gold / Sapphire Black / Moonlight White

Incredible Design

The notion of blending the calming simplicity of Zen minimalism with the raw beauty of nature was the inspiration behind the ZenFone 3’s design, materials and colors.

Zenfone 3 Designs of ASUS

The resulting design of the ZenFone 3 is a beautifully sleek and flat monolithic block with attractively rounded corners that is not much larger than the display it houses, and a very slim side profile of only 7.7mm.

The ZenFone 3’s simple, clean lines are then further accentuated by its premium glass and aluminum construction; and the overall effect is a beautiful, sophisticated appearance that belies its affordable price.

Front and rear Gorilla Glass 3 panels – The front and rear of the ZenFone 3 are fully covered with protective sheets of tough Corning Gorilla Glass 3. Under the rear glass panel is etched the iconic ASUS hairline spun metal concentric circle pattern that is reminiscent of the water ripples of a pond, or the gravel circles of a Japanese Zen garden.

This attractive pattern is especially prominent when viewed at an angle, with the light creating dynamic wedge-shaped reflections of the concentric circle pattern that shift as the viewer’s gaze changes.

Zenfone 3 Overview

Both the front and rear glass panels have “2.5D” contoured edges that, from the side, look like the meniscus of a water drop on a flat surface. This contouring fuses the panels seamlessly into the diamond cut metallic edges of the phone’s aluminum alloy frame.

Fingerprint sensor – The ZenFone 3’s fingerprint sensor is conveniently positioned near the top of its rear panel, allowing the user’s index finger rest naturally on it.

The fingerprint sensor allows for rapid unlocking of the phone in just 0.22 second, and can also be used for authentication by other apps. It lets up to five fingerprints to be registered, and it can detect them regardless of the direction of the fingers placed on it.

Rounded, sandblasted aluminum alloy frame – The aluminum alloy frame of the ZenFone 3 is rounded and has a finely sandblasted surface. The contoured edges of the glass, combined with these rounded edges make the ZenFone 3 a delight to behold with the eye, and pleasure to hold in the hand.

Zenfon 3 Side View

Inspiring Colors – The ZenFone 3 comes in four colors that were named after the natural elements that inspired their choice. All of their rear panels are etched with the iconic ASUS hairline spun metal concentric circle pattern.

  • Sapphire Black has the deep bluish-black of the darkest sapphires
  • Aqua Blue shimmers like the light blue surface of a clear, shallow sea
  • Moonlight White exudes the glow of bright moonlight
  • Shimmer Gold was named after the warm reflection of a sunset off a lake

Zenfone 3 Color Varients

Incredible Display

The display of the ZenFone 3 is composed of a 5.5-inch, Full HD (1920 x 1080) Super IPS+ panel. FHD 1920 x 1080 is the most common resolution of high definition Blu-Ray movies available today, making the ZenFone 3 ideal for playing them in their full high-resolution glory. With a brightness of 600nits, the display is also one of the brightest for the ZenFone 3’s screen size and among smartphones in its price class. Being an IPS panel, it has a wide viewing angle of 178 degrees, making it clearly readable from any direction.

The display also has a very slim bezel of that is only 2.1mm wide. This pushes the screen-to-body ratio to a high 77.3%, meaning that the screen area is maximized while the phone’s body and bulk is minimized. This is much higher compared to even the Apple iPhone 6 plus which has a screen-to-body ratio of 68%, and makes the ZenFone 3 one of the world’s smallest phones with a 5.5-inch display.

Zenfone 3 Screen Area

Incredible Photography

Empowering users to take better smartphone photos was a critical driving force behind the design of the new ZenFone 3 models. To achieve this, our engineers put the best performing smartphone camera systems into the ZenFone 3: ASUS PixelMaster 3.0.

The main camera of the ZenFone 3 family is packed with features that are designed to help its users focus faster in any environment, and shoot better, clearer, more color-accurate photos.

ASUS PixelMaster 3.0 – PixelMaster 3.0 is the brand of the entire camera system in the ZenFone 3 series. It is a combination of advanced hardware – sourced from the industry’s best experts as well as developed in-house, coupled with proprietary ASUS software tuning and tweaks.

ASUS Pixelmaster Tech

16 Megapixel Sony Exmor RS IMX298 Sensor – The ZenFone 3’s main rear camera uses Sony’s latest 16-megapixel Exmor RS IMX298 sensor. Its 16-megapixel resolution is higher than many cameras of top-of-the-line models from competing brands, not to mention smartphones in the same price range as the ZenFone 3. This enables the ZenFone 3 to either zoom in more clearly, or create more detailed full-resolution photos than its competitors. This high resolution also allows the ZenFone 3 to have its photos printed onto large photo media or cropped in post processing with minimal detail loss compared to smartphones with lower resolutions.

Key Camera Specs

Key Camera Specs of Zenfone 3

ASUS zenfone 3 More details

Deep Trench Isolation (DTI) – The ZenFone 3’s sensor features a technology called Deep Trench Isolation or “DTI”. DTI produces clearer and finer photo details by preventing light hitting the surface of a pixel on the sensor from leaking to its neighboring ones through its transparent structure below. DTI does this by using embedding the rows and columns of pixels in microscopic trenches with walls that separate them. These trench walls prevent photons of light from leaking from one to another and isolate the light hitting the surface of the pixel to that pixel only – hence the technology’s name.

Deep Trench Isolation (DTI)

Color Correction Sensor

0.03 Second “TriTech” Autofocus – The ZenFone 3 is also among the very few phones to offer a triple
technology autofocus system that combines 1) an advanced second generation laser, with 2) phase detection and 3) conventional contrast detection for continuous focus, that achieve extremely rapid 0.03 second autofocus in any environment. The advanced system is also able to achieve continuous autofocus on moving subjects.

Asus photo detection

Zenfone 3 Laser focus

4-axis Photo OIS – Handheld shooting of photos with slow shutter speeds in environments that need them often result in blurring. The ZenFone 3’s optical image stabilization (OIS) system detects hand movements along four axes – 1) up and down shifting (Y-axis), 2) left to right shifting (X-axis), 3) pitch (up-down pivoting), and 4) yaw (left-right pivoting) – and instantaneously moves the sensor in the exact magnitude and direction of the movements detected. This OIS system enables the photographer to use shutter speeds that are up to four stops slower, and can mean the difference between blur or sharp photos shot with slow shutter speeds. Furthermore, OIS is a very rare camera feature for phones in the same price range as the ZenFone 3.

Even then, those with OIS can only achieve a three stop slower shutter speed. 3-axis Video EIS – Handheld videos shot with the ZenFone 3 are kept steady during recording using its electronic image stabilization (EIS) system. The system senses movements along three axes – 1) pitch (up-down pivoting), 2) yaw (left-right pivoting) and 3) roll – and automatically corrects them with its powerful imaging processor by comparing frames and removing the shaking motion.

4 K video recording smartphone

HDR Pro and Real Time HDR – In HDR Pro mode, the camera is able to analyze photos and create the perfect exposure by intelligently lowering the brightness in overexposed sections, and increasing the brightness by up tp 400% in underexposed parts. The result is a photo with greater detail and well-exposed sections throughout. This mode is good for taking photos with extremely contrasting lighting – like shooting a subject in the shadows against a bright background. Unlike the HDR modes of other smartphones, the ZenFone 3’s HDR photo results are shown in real time on the display when
framing the shot – so what you see is what you get as the resulting photo.

HDR Pro and Real Time HDR

Super Resolution Mode – With the ZenFone 3’s Super Resolution Mode, users can create a super-high resolution, 64MP photos. It achieves this by using special image-processing techniques to capture and combine four native 16MP photos to create a single image with exceptional 4X clarity, greater detail and less noise.

Super Resolution Mode
Super Resolution Mode (64MP)
Normal Resolution (16MP)
Normal Resolution (16MP)

Low Light Mode – In low light conditions, the ZenFone 3’s Low Light Mode can combine four adjacent pixels on its sensor to work as a single large pixel that has far greater light sensitivity. This mode increases the light sensitivity of the sensor by up to 400%, allowing photos to be shot in low light conditions at faster shutter speeds that prevent blurring, and/or without the harsh, overpowering light of a flash. Although using this mode causes the photo resolution to be reduced to a quarter of the original sensor’s resolution, it is better to be able to shoot in dark environments than not at all, and the ZenFone 3’s high resolution is still able to produce a decent 4 megapixel photo in this mode. This low light mode, combined with the OIS of the ZenFone 3, allows it to shoot clearer photos in dim conditions compared to other smartphones.

Low Light Mode

Low light mode preview

Professional manual creative controls – A scene can be interpreted in many ways, and the phones’ auto or preset modes may not always render the photo you want. For this, the ZenFone 3 offers users a set of manual controls. These professional creative settings include custom white balance, Exposure Value (EV), ISO sensitivity, shutter speed and focus, making the ZenFone 3 a powerful tool for learning the fundamental skills of photography, and allowing users to creatively shoot scenes in many different interpretations.

Professional manual creative controls

32 second slow shutter mode – The most impressive of the ZenFone 3’s manual creative controls is the slow shutter mode that allows photos to be shot with up to 32 seconds of exposure time. Typically used for low light or night photos, this mode is ideal for shooting night landscapes, capturing the light streaks of passing traffic or capturing stationary subjects in very low light conditions without the harsh lighting of a flash. This mode needs the phone to be shot from a stable, non-moving platform, and is best used with a self-timer so that the pressing of the shutter button doesn’t cause shaking that will blur the resulting photo.

16 second exposure photo shot on slow shutter mode

Comprehensive Preset Modes – The ZenFone 3’s camera provides a comprehensive collection of pre-set
modes that optimize it to shoot in just about any environment and any subject. Highlights include special effect filters, a miniature mode that makes subjects appear like mini toy figures, automated unwanted element removal, an automated beautification mode for human portraits as well as an automated time-lapse mode. In particular, the HDR Pro mode is able to display the resulting HDR photo during live framing – so you can see the results before you even shoot – which is unique among smartphone cameras that can also shoot HDR photos.

Panorama Mode – The perfect mode for wide landscapes, Panorama allows users to pan the camera from one side of landscape to another while the camera automatically captures the separate frames and stitches them together to for a wide panoramic photo.

Panorama Mode

Depth of Field mode – Excellent for close-up subjects or human portraits, this mode intelligently increases the blurring of the background so as to emphasize the main subject.

Depth of Field mode

Miniature Mode – A truly whimsical and fun setting, Miniature mode is able to make subjects appear like toy models in a diorama. In this mode, the camera allows you to choose a horizontal or vertical band for the miniaturization effect to be applied to your subjects.

Miniature Mode

Time Rewind Mode – In Time rewind mode, the camera shoots a rapid burst of frames in sequence for up to two seconds, after which it allows the user to choose frames from an interactive timeline to save. This mode is ideal for fast moving subjects like children, pets or sportspeople in action.

Time Rewind Mode

All Smiles – The all smiles mode is a little similar to Time Rewind mode because it also shoots several frames in rapid sequence. But instead of a time limit of two seconds, All Smiles mode shoots five frames which it then presents on its interface, allowing the best ones to be chosen for saving.

Gif Animation Mode – Animated Gif images are simple animations composed of a repeating loop of sequential images. They are super easy and fun to create using the Gif Animation Mode. Simply shoot your subject in this mode and the camera will compile the photo sequence as an animated gif image. The interface even allows you to modify the speed of the animation before saving.

Gif Animation Mode

Incredible Audio – Matching the ZenFone 3’s impressive display is its impressive audio performance, made possible by its SonicMaster technology, featuring a new NXP “Smart Amp” and Hi-Res Audio support.Powerful New 5-Magnet, NXP Amp powered speakers – Go on, play your favorite rock song on the ZenFone 3 at its maximum volume – and be awe struck by its unbelievably clear, loud, yet distortion free sound with a rich bass to boot. This was made possible by its special new five magnet speaker system developed by ASUS’ specialist audio team. The speakers are powered by a compact “smart amplifier” from mobile device audio experts NXP. This NXP smart amp not only drives the speakers at high volumes while suppressing

Powerful New 5-Magnet, NXP Amp powered speakers – Go on, play your favorite rock song on the ZenFone 3 at its maximum volume – and be awe struck by its unbelievably clear, loud, yet distortion free sound with a rich bass to boot. This was made possible by its special new five magnet speaker system developed by ASUS’ specialist audio team. The speakers are powered by a compact “smart amplifier” from mobile device audio experts NXP. This NXP smart amp not only drives the speakers at high volumes while suppressing distortion, but also ensures they are not damaged over the course of time.

Hi-Res Audio output – Music fans will be exited to know that the ZenFone 3 is Hi-Res Audio (HRA) certified. HRA offers ultra-clear, detailed audio with superior sound staging and fidelity to the original recording, and overall quality that is 4x CD quality. To achieve HRA certification, audio players like the ZenFone 3 must be powerful enough to read, process and play the high bandwidth data of high resolution audio files rated at 24-bit/96kHz or 24-bit/192kH; and paired with Hi-Res Audio certified output devices. To test the Hi-Res Audio output of the ZenFone 3, please ensure you have the following:

Hi-Res Audio output

Incredible Performance
The ZenFone 3 is the world’s first smartphone to use Qualcomm’s latest SnapDragon 625 processor and its accompanying Adreno 506 graphics engine.

Qualcomm Snapdragon 625 CPU and Adreno 506 GPU – The Snapdragon 625 is a powerful mobile processor featuring eight ARM Coretex A53 cores and a speed of 2.0GHz. It is based on the industry’s very latest 14 nanometer processor manufacturing technology that makes it powerful, yet super-efficient. In fact, it uses about 35% less power per day compared to the older Snapdragon 617 processor.

Qualcomm Snapdragon 625 CPU and Adreno 506 GPU

The Snapdragon 625 is accompanied by the Adreno 506 GPU which gives avid mobile gamers realistic 3D imagery and developers with support for the latest graphics APIs To learn more about the Qualcomm Snapdragon 625 processor, please https://www.qualcomm.com/products/snapdragon/processors/625

Snapdragon 625

Long Lasting Battery – The high power efficiency of the ZenFone 3’s Qualcomm Snapdragon 625 processor, coupled with its high 3000mAh battery capacity give the smartphone an amazing battery performance that includes the following impressive timings:

Long Lasting Battery

The ZenFone 3 also comes with a high power, 5-Volt, 2-amp charger that allows it to provide an incredible 2 hours of talk time with just a 5-imute charge.

ASUS ZenUI 3.0 on Android 6.0
The ZenFone 3 runs on the latest version of Google Android 6.0 (Marshmallow), and features the latest ZenUI 3.0 interface which has the following highlights, among many other interesting features:
Brand New UI – ZenUI 3.0 features a new interface with better customization, and useful appearance tweaks that include the following:

ASUS ZenUI 3.0 on Android 6.0

These can be reprogrammed to whatever app users wish to launch with.
GameGenie – GamGenie is a new game supporting app that automatically starts when a game launch is detected. Pressing its discreet floating icon will allow users to stream live game screens to social media platforms, and provides an in-game browser which is useful for finding tips, walkthroughs, guide videos and cheats.


Mobile Manager

ZenFone 3 Deluxe offers a brand new and innovative way of enjoying your smartphone experience. The Mobile Manager function helps to optimize battery usage, making the phone run for longer hours. It helps the device become faster, as is observed when playing games, browsing on the internet or even when watching videos! Mobile Manager clears up the previous storage space and also enables savings by keeping track of data usage. Given the concerns over privacy leaks in the recent years, Mobile Manager’s ability to protect against the same is a much-required utility!

ASUS ZenFone Content Hub

ZenFone 3 owners join a global community of ZenFone users who are supported by the ASUS ZenFone Content Hub at www.ZenFone.ASUS.com.
Here, ZenFone owners can learn new tips and tricks for using their ZenFones, improve their photography skills, get help and support, read hardware and app reviews, or browse the latest educational, social and entertainment content shared by ASUS or their fellow “ZenFans”.

About Bhavesh Sondagar

Bhavesh Sondagar is editor in chief at theandroidportal.com. He loves to write about tech, gadget and android apps.