Specs summary

Screen
5.5"

The Asus ZenFone 4's screen is 5.5 inches with 1080 x 1920 pixels resolution.

Processor
2.2 GHz

There is a Qualcomm Snapdragon 660 Octa core 2.2 GHz processor (CPU).

OS

The phone runs on the Android 7.0 Nougat operating system (OS).

Camera
12+ MP

You can take photos with the phone's onboard 12+ megapixel camera.

There is also a secondary front facing camera with 8+ megapixels resolution.

Storage
64 GB

Internal memory is 64 GB. An external, MicroSD, MicroSDHC, microSDXC (up to 2000 GB) expansion slot is available for increased storage capacity.

Battery
3300mAh

The phone is powered by a Lithium Polymer (Li-Pol), 3300 mAh battery. Asus's performance ratings are minutes (2G), minutes (3G).



With the ZenFone 4, Asus offers a competitively equipped smartphone that revealed almost no flaws in our test findings.

- Daniel Schmidt , Notebookcheck 

Reviews (8.2/10 Avg. rating)


KitGuru

A solid mid-range phone that doesn’t have any serious weaknesses

from KitGuru

The ASUS ZenFone 4 is well worth buying. It does everything consistently well and doesn’t have any serious weaknesses, making it an attractive proposition at £449.99.

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The ASUS ZenFone 4 is well worth buying. It does everything consistently well and doesn’t have any serious weaknesses, making it an attractive proposition at £449.99.

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Notebookcheck

High-quality-build, excellent main camera

from Notebookcheck

Asus manages to offer an attractive continuation of its ZenFone series with the ZenFone 4. Its design is elegant, yet simple and its system performance convinced us.

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Asus manages to offer an attractive continuation of its ZenFone series with the ZenFone 4. Its design is elegant, yet simple and its system performance convinced us.

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PhoneArena

An improvements over previous Zenfones

from PhoneArena

A solid option in its price point, so we’re pretty confident in saying that there’s never been a better time to try out a Zenfone – especially if it’s the Zenfone 4.

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A solid option in its price point, so we’re pretty confident in saying that there’s never been a better time to try out a Zenfone – especially if it’s the Zenfone 4.

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Android Central

A good phone let down by the price

from Android Central

The ZenFone 4 is an excellent phone, but it's one that many may pass over because of its price. At £449, you're paying a fairly high price for a mid-range device. Ultimately, that's where it comes unstuck. If you do buy one, you'll enjoy using it, it's a really nice phone...More

The ZenFone 4 is an excellent phone, but it's one that many may pass over because of its price. At £449, you're paying a fairly high price for a mid-range device. Ultimately, that's where it comes unstuck. If you do buy one, you'll enjoy using it, it's a really nice phone. But it's going to be too easy to pass it over.

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T3

Superb audio and image-taking capabilities elevate Asus' sleek new smartphone

from T3

If you are a camera connoisseur then the ZenFone 4 is going to absolutely blow you away. Taking photos with this phone is just heavenly, with its dual-lens camera system delivering in EVERY situation, no matter if it epic landscapes or intimate selfies. The fact that it delivers this on top of a...More

If you are a camera connoisseur then the ZenFone 4 is going to absolutely blow you away. Taking photos with this phone is just heavenly, with its dual-lens camera system delivering in EVERY situation, no matter if it epic landscapes or intimate selfies. The fact that it delivers this on top of a solid core spec, excellent audio credentials, and an innovative software suite just makes us love it more.

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Recombu

Lack of serious power is a let-down

from Recombu

So far the Zenfone 4 seems a solid mid-range smartphone, although can it really do enough to sway consumers from the likes of the OnePlus 5? Certainly there are plenty of great software features packed inside Asus’ ZenUI, which will particularly please parents and anyone who demands complet...More

So far the Zenfone 4 seems a solid mid-range smartphone, although can it really do enough to sway consumers from the likes of the OnePlus 5? Certainly there are plenty of great software features packed inside Asus’ ZenUI, which will particularly please parents and anyone who demands complete customisation. Meanwhile that dual-lens camera is one of the best we’ve tested at this price point also, making the phone a worthy consideration for Instagram obsessives. Media fans are also well catered for, in pretty much every department.

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Full Specs

Overview
Release date October 31, 2017
Regions available USA, Canada, United Kindom
Networks
GSM:
850/900/1800/1900 MHz
UMTS:
850/900/1700/1900 /2100 MHz
LTE:
1700/1900/700/2100 /850/900/1800/2600 MHz
Data:
GPRS, EDGE, HSUPA, HSPA+, LTE
SIM card Nano-SIM
Dual SIM Yes
Operating System Android 7.0 Nougat

Compare Android Smartphones

Processor Qualcomm Snapdragon 660 Octa core 2.2 GHz
Internal Flash Memory 64 GB
RAM 6 GB
ROM No
GPS Type A-GPS
Digital compass Yes
Flightmode Yes
Hearing Aid Compatible Yes
TTY/TDD Yes
Noise Cancellation Yes
SAR Head: 1.18 W/kg
Body: 0.79 W/kg
Languages English
Manufacturer Warranty 1 Year
Accessories Included USB Power Adapter, Manual, Headphones, Data Cable
Power & battery
Type Lithium Polymer (Li-Pol)
Battery Capacity 3300 mAh
Removable Battery No
Wireless Charging No
Fast Charging Yes
Video Playback Time 960 minutes
Wi-Fi Surfing Time 1080 minutes
3G Surfing Time Unknown
4G Surfing Time Unknown
Talk Time Unknown
3G Talk Time Up to: 1500 minutes (3G)
Standby Time Up to: 23 days
Physical Characteristics
Design type Bar
Multi-Use Smart Phone / PDA Yes
Material Aluminium
Colors Moonlight White, Mint Green, Midnight Black
Dimensions [H x W x D] 15.5 x 7.5 x 0.7 cm (6.1 x 3 x 0.3 in)
Weight 165 grams
Water Resistant / Waterproof No
Rugged design No
IP Rating No
Antenna Type Internal
Changeable Faceplates No
Display / Screen
Type Color
Technology LCD (IPS)
Colors 16.7 million
Resolution 1080 x 1920 pixels
Pixel density 401 pixels
Size 5.5 inches
3D No
Secondary Display No
Sensors Ambient Light, Proximity, Motion / Accelerometer, Gyroscope
Graphics Yes
Themes Yes
Backlit Illumination Yes
Zoom / Magnification Yes
Screen Orientation Lock Yes
Multi-Touch Yes
Fingerprint-Resistant Coating No
Additional Display Features Capacitive touch screen
Input / Navigation
Sleep / Wake Key Yes
Home Key Yes
Mute Key No
Input Type Touchscreen
Navigation Type Touchscreen
Predictive Text Entry Yes
Physical keyboard No
Voicemail Key No
Any Key Answer No
Voice Commands Yes
Keypad/Screen Lock Yes
External Volume Control Yes
External Media Playback Controls No
Fingerprint Sensor Yes
Call Management
Wi-Fi Calling Yes
Voice over LTE (VoLTE) Yes
Contact List Capacity Depends on system memory
Multiple Numbers Per Contact Email address, Other fields
Contact Groups Yes
Auto Answer No
Voice Activated Dialing Yes
Photo Caller ID Yes
Web / Email / Messaging
Web Browser Yes
Email Client Yes
Email Protocols POP3, IMAP, Microsoft Exchange
Additional Email Features Gmail
Messaging SMS, MMS, IM
Push-to-talk (PTT) No
Connectivity
USB USB Type-C
USB OTG Support Yes
Infrared No
Bluetooth 5.0
Bluetooth Profiles A2DP, AVRCP, OPP/FTP, HFP, HSP
WiFi 802.11 a/b/g/n
WiFi Encryption WEP/WPA/WPA2
Mobile Hotspot Yes
WiMAX No
Memory Expansion Slot Yes
Expansion Slot Info MicroSD, MicroSDHC, microSDXC (up to 2000 GB)
PC Synchronization Yes
TV Out No
DLNA Support No
NFC Yes
UMA Support No
Data Tethering Compatibility Yes
Java Applications No
Brew Applications No
ECML / Digital Wallett No
PictBridge No
Camera
Main Camera
Aperture
ƒ/ 1.8
Resolution
12+ megapixels
Dual lens
Yes
Zoom
Yes
Flash
Yes (LED)
Additional Rear Camera Info
Auto focus, Effects, Face detection, Geotagging, Image stabilization, Panorama, Self-timer, Dual camera feature (8 MP 2nd camera), Phase detection, HDR, Time lapse
Video Recording Formats
3GP / 3GPP, H.264 / AVC, MPEG-4, WMV
Video Recording Parameters
Ultra HD (3840 x 2160 pixels), 30 fps
Front Camera
Resolution
8+ megapixels
Zoom
Yes
Additional Front Camera Info
F2.0 aperture, Selfie Panorama, HDR
Video Recording Parameters
Audio / Video
Audio Playback Yes
Audio Formats AAC, AAC+, eAAC+, MIDI, MP3, MP4, M4A, WMA, WAV
Radio Yes (FM)
Video Playback Yes
Video Playback Formats 3GP / 3GPP, H.264 / AVC, MPEG-4, WMV
Mobile TV No
Streaming Video Yes
External Speakers Yes
Headset Jack 3.5mm
Custom Ringtones Yes
Vibration Alert Yes
Downloadable Ringtones Yes
Ringtone Composer No
Ringer ID Yes
Haptic Feedback Vibration Yes
Speakerphone Yes
Apps
To-Do / Task List No
Calendar Yes
World Clock Yes
Alarm Yes
Stop Watch Yes
Timer Yes
Calculator Yes
Currency Converter No
Weather Yes
Stocks No
Maps Yes
NotePad No
Voice Memos / Recorder Yes
Games Downloadable
Apps Downloadable, Pre-installed
Included Software / Apps -
More
Additional comments Other Names (AKA): Asus ZE554KL

Related Links Manual (PDF)
Asus ZenFone 4 Reviews
Where to buy Asus ZenFone 4
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