Asus Zenfone 4 Pro ZS551KL

OS: Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4

CPU: Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)

Display: 5.5" inc

Camera: 12 MP, Dual

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Asus Zenfone 4 Pro ZS551KL smartphone runs on Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4 operating system. The phone is powered by Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) processor. It has 64/128 GB, 6 GB RAM. Internal storage options which can be extended with the help of microSD, up to 512 GB (uses SIM 2 slot). The smartphone has a AMOLED providing, Screen-to-Body Ratio of 70.3%. The smartphone is fueled with a 3600 mAh, Non-removable Li-Ion. The main camera of the smartphone consists of a 12 MP, Dual. The sensors include Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum , Infrared port. Connectivity features in the smartphone include Bluetooth, A-GPS, GLONASS, BDS, GALILEO, Wi-Fi, NFC, 3.5 mm Jack and more. The Asus Zenfone 4 Pro ZS551KL are available in various colors such as Moonlight white, Pure Black. It measures 156.9 x 75.6 x 7.6 mm and weighs 175 g.

Hardware and OS Asus Zenfone 4 Pro ZS551KL
Operating system:	Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4
Processor:	Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
Chipset:	Qualcomm MSM8998 Snapdragon 835 (10 nm)
GPU:	Adreno 540
Internal memory:	64/128 GB, 6 GB RAM
External memory:	microSD, up to 512 GB (uses SIM 2 slot)
Display Asus Zenfone 4 Pro ZS551KL
Type:	AMOLED
Size:	5.5" inc
Resolution:	1080 x 1920 px
Protection:	Corning Gorilla Glass 5
Touchscreen:	capacitive touchscreen
Screen-to-Body Ratio:	70.3%
Display area:	83.4 cm²
Display aspect ratio:	16:9 (height:width)
Pixel Density:	401 PPI
Colors:	16M
Connectivity Asus Zenfone 4 Pro ZS551KL
2G Network:	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network:	HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G Network:	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
Wi-Fi:	Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Network:	GSM / HSPA / LTE
SIM card:	Hybrid Dual SIM (Nano-SIM, dual stand-by)
Bluetooth:	5.0, A2DP, EDR, LE, aptX
Edge:	Yes
GPRS:	Yes
GPS:	Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC:	Yes
Speed:	HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps
USB:	Type-C 1.0 reversible connector
Camera Asus Zenfone 4 Pro ZS551KL
Main camera:	12 MP, Dual
Specs:	12 MP, f/1.7, 25mm (wide), 1/2.55', 1.4µm, 4-axis OIS, dual pixel PDAF & laser AF -16 MP, 50mm (telephoto), 1/3.1', 1.0µm, 2x optical zoom, AF
Features:	LED flash, HDR, panorama
Features:	HDR
Video:	2160p@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps
Selfie camera:	8 MP, Single
Specs:	8 MP, f/1.9, 1/3.2', 22mm (wide), 1.4µm, PDAF
Video:	1080p@30fps
Multimedia Asus Zenfone 4 Pro ZS551KL
3.5 mm Jack:	Yes
Radio:	FM radio
Design Asus Zenfone 4 Pro ZS551KL
Colors:	Moonlight white, Pure Black
Body build:	Front/back glass (Gorilla Glass 5) & aluminum frame
Dimensions:	156.9 x 75.6 x 7.6 mm
Weight:	175 g
Battery Asus Zenfone 4 Pro ZS551KL
Battery capacity:	3600 mAh, Non-removable Li-Ion
Battery life:	Talking time- Up to 27 h 30 min (3G)
Other Asus Zenfone 4 Pro ZS551KL
Release date:	2017, August
Sensors:	Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum , Infrared port

Asus Zenfone 4 Pro ZS551KL Overview

The Asus Zenfone 4 Pro ZS551KL is a powerful and feature-packed smartphone that offers a premium user experience. Running on Android 7.1.1 (Nougat) with an upgradeable ZenUI 4, this phone is powered by an octa-core Qualcomm Snapdragon 835 processor and Adreno 540 GPU, making it capable of handling even the most demanding tasks with ease.

The Zenfone 4 Pro comes with either 64GB or 128GB of internal storage and 6GB of RAM, providing ample space for all your apps, games, and media files. Additionally, the microSD card slot allows for expandable storage up to 512GB.

The 5.5-inch AMOLED display with a resolution of 1080 x 1920 pixels delivers crisp and vibrant visuals, protected by Corning Gorilla Glass 5. The phone's sleek design features a front and back glass panel with an aluminum frame, giving it a premium look and feel.

The dual camera setup on the back includes a 12MP wide-angle lens and a 16MP telephoto lens, allowing for impressive photography and video recording capabilities. The 8MP front-facing camera is perfect for selfies and video calls.

Other notable features of the Zenfone 4 Pro include NFC, Bluetooth 5.0, a fingerprint sensor, FM radio, and a 3600mAh non-removable battery. With support for GSM, HSPA, and LTE networks, this phone offers reliable connectivity wherever you go.

Pros:
- Powerful Snapdragon 835 processor
- Stunning AMOLED display with Gorilla Glass 5 protection
- Dual camera setup for high-quality photos and videos
- Ample storage and memory options
- Premium design with glass and aluminum construction

Cons:
- No wireless charging support
- Older Android version out of the box (upgradeable to Oreo)
- Lack of water resistance rating