Updated : Oct 23, 2019, 3:01 AM

Asus ZenFone 4 Pro

Full Specifications

Released · Oct 30, 2017

This device is also known as Asus ZS551KL

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Design
Dimensions	6.18 x 2.98 x 0.30 inches 156.9 x 75.6 x 7.6 mm
Weight	6.17 oz (175.0 g)
Materials	Back: Glass Frame: Metal
Biometrics	Fingerprint (touch)
Features	Notification light, Touch sensitive control keys
Keys	Right: Volume control, Lock/Unlock key
Colors	Black, White

Display
Size	5.5-inch
Resolution	1920x1080px, 16:9 ratio, 401 PPI
Technology	AMOLED
Screen-to-body	70.54 %
Features	Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

PhoneArena Display Test
Bright Max (20 APL)	Untested
Bright Min	4 (Poor)
Learn more on our PhoneArena Display Test Results page.

Hardware
System chip	Qualcomm Snapdragon 835 MSM8998 (10 nm)
Processor	Octa-core 2450 MHz Kryo 280
GPU	Adreno 540
RAM	6GB (LPDDR4)
Internal storage	64GB, available to use: 54 GB
Storage expansion	microSDXC up to 2000 GB
OS	Android (8.0 Oreo, 7.1 Nougat)
This device has different variants: View all

Battery
Capacity	3600 mAh
Type	Li - Ion
Charging	Fast charging

Camera
Rear	Dual camera
Main camera	12 MP (OIS, Laser and PDAF) Aperture size: F1.7 Focal length: 25 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Second camera	16 MP (Telephoto, Autofocus) Optical zoom: 2.0x Focal Length: 50 mm Sensor size: 1/3.09" Pixel size: 1 μm
Flash	LED
Video recording	3840x2160 (4K UHD) (30 fps) Time-lapse video, Continuous autofocus, Object tracking, Picture-taking during video recording, EIS, Video calling, Video sharing
Front	8 MP (Wide Angle)

Connectivity & Features
Bluetooth	5.0
Wi-Fi	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB	Type-C, USB 2.0
Location	GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors	Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other	NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync

Multimedia
Headphones	3.5mm jack
Speakers	Earpiece, Loudspeaker
Features	Album art cover, Background playback
Screen mirroring	Wireless screen share
Radio	FM
Additional microphone(s)	Noise cancellation

Cellular
4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS)
4G (TDD)	Bands 38(2600), 39(1900+), 41(2600+)
3G	Bands 6(800), 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed	LTE-A Cat 12 (600/100 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM	Yes
SIM type	Nano SIM
This device has different variants: View all

Regulatory Approval
FCC approval	Date approved: Nov 01, 2017 FCC ID value: MSQZ01GS
Measured SAR	Head: 1.19 W/kg Body: 0.55 W/kg Simultaneous Transmission: 1.56 W/kg Wireless Router: 1.19 W/kg Phablet: 3.20 W/kg

Buyers information
MSRP	$ 599

Availability
Officially announced	Aug 17, 2017

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Alternative variants

International version

Differences from the main variant:
4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 17(700 b), 19(800 Upper), 20(800 DD), 28(700 APT)
4G (TDD)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

with 128 GB storage

Differences from the main variant:
Internal storage	128GB

News

While Asus recently announced a ZenFone 5 series of smartphones, this is not available in the US yet. Thus, the best Asus handset that can be currently bought stateside remains the ZenFone 4 Pro, a high-end device first released in October.Originally...

Deal: High-end Asus ZenFone 4 Pro now costs just $399 ($200 off)

Asus continues to update its ZenFone 3 and 4 smartphones, which it said it would bring to Android 8.0 Oreo by the second half of the year. The latest addition to the list of smartphones with Android Oreo is the ZenFone 4 Pro, Asus' flagship from last...

Asus ZenFone 4 Pro starts getting Android 8.0 Oreo update

Asus' newest high-end smartphone, the ZenFone 4 Pro, has been available to buy in the US since late October. Initially priced at $599, the handset can now be bought for $499 - at this price, we'd say the phone is a worthy alternative to the OnePlus 5...

Deal: Asus ZenFone 4 Pro is now $100 cheaper in the US

Not long after releasing the 5.5-inch ZenFone 4 Max, Asus today launched three other new and unlocked smartphones in the US: ZenFone 4 Pro, ZenFone 4, and a 5.2-inch variant of the ZenFone 4 Max. As its name suggests, the most advanced (and most expe...