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Asus Zenfone 4 Pro ZS551KL#1219

Released: 2017

Asus Zenfone 4 Pro ZS551KL

Overall Score

61.5

Category Breakdown

Overall(#1219)61.5
Performance(#2109)80.2
Camera(#526)94.6
Display(#1903)80.2
Battery(#4032)26.9
Build(#759)80.5
Connectivity(#1834)67.9
Audio(#1818)71.5

Comparisons Featuring Asus Zenfone 4 Pro ZS551KL

Huawei Mate 10 Porsche Design|Huawei Mate 9 Pro|Huawei Mate 10 Pro|Huawei Mate 9 Porsche Design|Huawei P20 Pro|Xiaomi Mi A3|Xiaomi Mi Cc9e|Honor 20|Honor 20 Pro|Honor Magic 2 3d|Xiaomi Redmi K20|Google Pixel 4a

Short Review

  • The Asus Zenfone 4 Pro ZS551KL features a sleek design with a glass front and back, reinforced by Gorilla Glass 5, and an aluminum frame, measuring 156.9 x 75.6 x 7.6 mm and weighing 175g.
  • Its 5.5-inch AMOLED display offers a resolution of 1080 x 1920 pixels, providing sharp visuals at approximately 401 ppi.
  • Powered by the Qualcomm Snapdragon 835 chipset, it delivers strong performance with an octa-core CPU and Adreno 540 GPU, supported by 6GB of RAM.
  • The camera system includes a dual setup with a 12 MP wide lens and a 16 MP telephoto lens, featuring optical image stabilization and 2x optical zoom, capable of recording 4K video.
  • The 8 MP front camera is suitable for selfies.
  • The battery capacity is 3600 mAh, supporting 18W fast charging but lacking wireless charging.
  • Running on Android 7.1.1 with ZenUI 4, it is upgradable to Android 8.
  • Connectivity options include Bluetooth 5.0, NFC, and USB Type-C, but it does not support 5G.
  • The phone is available in Moonlight White and Pure Black colors.
  • Overall, it combines solid build quality, impressive performance, and a capable camera system.

Specifications

General

Release Date2017
Announced2017
DescriptionN/A

Display

Size5.5"
TypeAMOLED
Resolution1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
PPI1080
Refresh Rate60Hz
HDR Support✗
ProtectionCorning Gorilla Glass 5

Performance

ChipsetQualcomm MSM8998 Snapdragon 835 (10 nm)
CPUOcta-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
GPUAdreno 540
Memory64GB 6GB RAM, 128GB 6GB RAM
Expandable Storage✗
Card SlotmicroSDXC (uses shared SIM slot)

Camera

Main Camera12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS16 MP, 50mm (telephoto), 1/3.1", 1.0µm, AF, 2x optical zoom
Main Camera FeaturesLaser AF, color spectrum sensor, LED flash, HDR, panorama
Front Camera8 MP, f/1.9, 22mm (wide), 1/3.2", 1.4µm, PDAF
Front Camera FeaturesHDR
Video Recording4K@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps
Selfie Video1080p@30fps
Optical Stabilization✓
Night Mode✗
Raw Photo Support✗

Battery

Capacity3600 mAh
Battery DetailsLi-Ion 3600 mAh, non-removable
Charging Details18W wired, 50% in 32 min
Fast Charging✗
Wireless Charging✗

Build & Safety

Dimensions156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)
Weight175 g
MaterialsGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
ColorsMoonlight white, Pure Black
Foldable✗
SARN/A

Connectivity

SIMNano-SIM + Nano-SIM
NetworkGSM / HSPA / LTE
Network SpeedHSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 or 100 Mbps
5G✗
4G✓
WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth5.0, A2DP, EDR, LE, aptX
NFC✓
USBUSB Type-C 2.0, OTG
IR Blaster✗
Headphone Jack✓
Radio✗
PositioningGPS, GLONASS, BDS, GALILEO

Audio

Stereo Speakers✗
LoudspeakerYes, dual speakers
Audio JackYes

Software & Security

Operating SystemAndroid 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4
Fingerprint✓
Face Unlock✗
SensorsFingerprint (front-mounted), accelerometer, gyro, proximity, compass