Asus Zenfone 4 Pro ZS551KL - Technical characteristics and specifications

Zenfone 4 Pro ZS551KL technical characteristics

About the device:

Asus Zenfone 4 Pro ZS551KL is a mobile/cell phone with dimensions of 156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in), a weight of 175 grams, a screen size of 5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio) and a screen resolution of 1080 x 1920 pixels, 16:9 ratio (~401 ppi density).

It has a processor Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo), a graphics card Adreno 540, a 6 GB RAM memory and an internal memory of 64/128 GB expandable by memory card microSD, up to 512 GB (uses SIM 2 slot) .

The Asus Zenfone 4 Pro ZS551KL comes from the factory with the Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo) operating system.

Technical information

Property	Value
Brand	Asus
Model	Zenfone 4 Pro ZS551KL

Connectivity
Network	GSM / HSPA / LTE
2G connectivity	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G connectivity	HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G connectivity	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Global, Taiwan
5G connectivity	No
Network speed	HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps
GPRS	Yes
EDGE	Yes
Date announced	2017, August
Status	Available. Released 2017, October

Body
Dimensions	156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)
Height	156.9
Thickness	7.6 mm
Weight gr.	175
Weight oz	6.17
SIM	Hybrid Dual SIM (Nano-SIM, dual stand-by)
Colors	Moonlight white, Pure Black

Screen
Type of screen	AMOLED capacitive touchscreen, 16M colors
Screen resolution	1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Screen size	5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio)

Platform
OS	Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo)
CPU	Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
Chipset	Qualcomm MSM8998 Snapdragon 835 (10 nm)
GPU	Adreno 540

Storage and memory
Memory card	microSD, up to 512 GB (uses SIM 2 slot)
Internal memory	64/128 GB
RAM	6 GB (See other devices with 6 GB)

Cameras
Main camera	12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4
Secondary camera	8 MP, f/1.9, 1/3.2", 22mm (wide), 1.4

Communications
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth	5.0, A2DP, EDR, LE, aptX
GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC	Yes
Radio	FM radio
USB	Type-C 1.0 reversible connector
Sensors	Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum