Asus Zenfone 4 Pro ZS551KL vs Infinix Zero 4 Plus: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Display technology

OLED versus LCD

Zenfone 4 Pro ZS551KL:

OLED

Zero 4 Plus:

LCD
Weight

Zenfone 4 Pro ZS551KL: 28 g lighter

Zenfone 4 Pro ZS551KL:

175 g

Zero 4 Plus:

203 g
Width

Zenfone 4 Pro ZS551KL: 7.4 mm narrower

Zenfone 4 Pro ZS551KL:

75.6 mm

Zero 4 Plus:

83 mm
Screen diagonal

Zenfone 4 Pro ZS551KL: 0.48 in smaller diagonal

Zenfone 4 Pro ZS551KL:

5.5 in

Zero 4 Plus:

5.98 in
Chipset

Zenfone 4 Pro ZS551KL:

Qualcomm MSM8998 Snapdragon 835 (10 nm)

Zero 4 Plus:

Mediatek MT6797M Helio X20 (20 nm)
Rear camera layout

Zenfone 4 Pro ZS551KL:

Dual

Zero 4 Plus:

Single

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Zenfone 4 Pro ZS551KL

Height:

156.9 mm
Width:

75.6 mm
Depth:

7.6 mm
2. Zero 4 Plus

Height:

160.5 mm +3.6 mm versus Zenfone 4 Pro ZS551KL
Width:

83 mm +7.4 mm versus Zenfone 4 Pro ZS551KL
Depth:

8.3 mm +0.7 mm versus Zenfone 4 Pro ZS551KL

Weight

Bars start at zero and share a scale within this chart.

1. Zenfone 4 Pro ZS551KL

175 g
2. Zero 4 Plus

203 g

+28 g versus Zenfone 4 Pro ZS551KL

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. Zenfone 4 Pro ZS551KL

Screen diagonal:

5.5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

83.4 cm²
2. Zero 4 Plus

Screen diagonal:

5.98 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

98.6 cm²

Zero 4 Plus has approximately 18.2% more rectangular screen area than Zenfone 4 Pro ZS551KL.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Zenfone 4 Pro ZS551KL, Zero 4 Plus, compared at the same storage capacity.
Storage	Zenfone 4 Pro ZS551KL	Zero 4 Plus
64 GB	6 GB RAM	Unknown
128 GB	6 GB RAM	Unknown

Zero 4 Plus: Original memory entry

64 GB · 512GB 4GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Zenfone 4 Pro ZS551KL

NFC:: Yes
Headphone jack:: Yes
Memory card support:: See details microSD · up to 512 GB (uses SIM 2 slot)

2. Zero 4 Plus

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 128 GB

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Zenfone 4 Pro ZS551KL

3600 mAh
2. Zero 4 Plus

4000 mAh

+400 mAh versus Zenfone 4 Pro ZS551KL

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Zenfone 4 Pro ZS551KL2. Zero 4 Plus

Everyday essentials

Everyday essentials — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Dimensions (HxWxD)	156.9 Х 75.6 Х 7.6 mm	160.5 Х 83 Х 8.3 mm
Weight	175 g	203 g
Technology	AMOLED	IPS LCD
Screen size	5.5" inch	5.98" inch
Screen resolution	1080 x 1920 px	1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	64/128 GB 6 GB RAM	64 GB 512GB 4GB
Memory card support	microSD up to 512 GB (uses SIM 2 slot)	microSD up to 128 GB
Battery Capacity is not battery life. No endurance test is implied.	3600 mAh Non-removable Li-Ion	4000 mAh Non-removable Li-Ion
Operating system OS	Android 7.1.1 (Nougat) upgradable to Android 8 (Oreo); ZenUI 4	Android 6.0 (Marshmallow)
Chipset	Qualcomm MSM8998 Snapdragon 835 (10 nm)	Mediatek MT6797M Helio X20 (20 nm)
NFC	Yes	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	83.4 cm2	98.6 cm2
Screen format	16:9 (height:width)	16:9 (height:width)
Screen to body ratio	70.3%	74.0%
PPI /points per inch/	401 PPI	368 PPI
Screen protection	Corning Gorilla Glass 5	Corning Gorilla Glass 3

Camera and Video

Camera and Video — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Rear camera, main	12 MP Dual	21 MP Single
Camera 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	21 MP f/2.0 OIS Laser AF/ PDAF
Functions	HDR	LED flash
Video	1080p@30fps	1080p@30fps
Front camera, selfie	8 MP Single	13 MP Single
Specifications	8 MP f/1.9 1/3.2'' 22mm (wide) 1.4µm PDAF	13 MP f/2.2

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Processor CPU	Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)	Deca-core 2.0 GHz
Graphics processor GPU	Adreno 540	Mali-T880 MP4
Antutu 7 score *	Unknown	73620
GeekBench 4 Single Core *	Unknown	1542
GeekBench 4 Multi-Core *	Unknown	4682

General specs

General specs — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Release date	2017 August	2017 March
Colors	Moonlight White Pure Black	Lilac grey Champagne Galaxy Blue Silver purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	390 EUR	Unknown
Battery life	Talking time- Up to 27 h 30 min (3G)	Unknown
Body build	Front/back glass (Gorilla Glass 5) & aluminum frame	Unknown

Communication and Connectivity

Communication and Connectivity — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
SIM card	Hybrid Dual SIM (Nano-SIM dual stand-by)	Dual SIM (Micro-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 -4G - 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 LTE band 1(2100) 12(700) 18(800) 26(850) 29(700) 30(2300) 41(2500) - US Canada Brazil LTE band 1(2100) 41(2500) - India	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 HSDPA 850 / 1700 / 1900 / 2100 -4G - LTE band 1(2100) 3(1800) 5(850) 7(2600) 8(900) 20(800) 38(2600) 40(2300) LTE band 2(1900) 4(1700/2100) 28(700)
Speed	HSPA 42.2/5.76 Mbps LTE-A (3CA) Cat12 600/150 or 100 Mbps	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n/ac dual-band WiFi Direct hotspot	Wi-Fi 802.11 a/b/g/n/ac WiFi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS GALILEO	Yes with A-GPS
USB	Type-C 1.0 reversible connector	microUSB 2.0 USB On-The-Go
Bluetooth	5.0 A2DP EDR LE aptX	4.2 A2DP LE

Music and Audio

Music and Audio — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Radio	FM radio	FM radio
Others	24-bit/192kHz audio -DTS sound -Active noise cancellation with dedicated mic	Unknown

Other features

Other features — specifications for Zenfone 4 Pro ZS551KL, Zero 4 Plus.
Specification	Zenfone 4 Pro ZS551KL	Zero 4 Plus
Dop	Sensors Fingerprint (front-mounted) accelerometer gyro proximity compass color spectrum Infrared port - Fast battery charging: 50% in 32 min	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass

Asus Zenfone 4 Pro ZS551KL vs Infinix Zero 4 Plus