Asus Zenfone 4 Pro ZS551KL vs Google Pixel 4: 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.

Weight

Pixel 4: 13 g lighter

Zenfone 4 Pro ZS551KL:

175 g

Pixel 4:

162 g
Width

Pixel 4: 6.8 mm narrower

Zenfone 4 Pro ZS551KL:

75.6 mm

Pixel 4:

68.8 mm
Screen diagonal

Zenfone 4 Pro ZS551KL: 0.2 in smaller diagonal

Zenfone 4 Pro ZS551KL:

5.5 in

Pixel 4:

5.7 in
Chipset

Zenfone 4 Pro ZS551KL:

Qualcomm MSM8998 Snapdragon 835 (10 nm)

Pixel 4:

Qualcomm SDM855 Snapdragon 855 (7 nm)
Depth

Zenfone 4 Pro ZS551KL: 0.6 mm thinner

Zenfone 4 Pro ZS551KL:

7.6 mm

Pixel 4:

8.2 mm
Height

Pixel 4: 9.8 mm shorter

Zenfone 4 Pro ZS551KL:

156.9 mm

Pixel 4:

147.1 mm

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 +9.8 mm versus Pixel 4
Width:

75.6 mm +6.8 mm versus Pixel 4
Depth:

7.6 mm
2. Pixel 4

Height:

147.1 mm
Width:

68.8 mm
Depth:

8.2 mm +0.6 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

+13 g versus Pixel 4
2. Pixel 4

162 g

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. Pixel 4

Screen diagonal:

5.7 in

Aspect ratio (height:width):

19:9

Approximate rectangular screen area:

81.1 cm²

Zenfone 4 Pro ZS551KL has approximately 2.8% more rectangular screen area than Pixel 4.

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, Pixel 4, compared at the same storage capacity.
Storage	Zenfone 4 Pro ZS551KL	Pixel 4
64 GB Recorded for all phones	6 GB RAM	6 GB RAM
128 GB Recorded for all phones	6 GB RAM	6 GB RAM

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. Pixel 4

NFC:: Yes
Headphone jack:: No
Memory card support:: No

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

+800 mAh versus Pixel 4
2. Pixel 4

2800 mAh

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. Pixel 4

Everyday essentials

Everyday essentials — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Dimensions (HxWxD)	156.9 Х 75.6 Х 7.6 mm	147.1 Х 68.8 Х 8.2 mm
Weight	175 g	162 g
Technology	AMOLED	P-OLED
Screen size	5.5" inch	5.7" inch
Screen resolution	1080 x 1920 px	1080 x 2280 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	64GB 6GB RAM 128GB 6GB RAM
Memory card support	microSD up to 512 GB (uses SIM 2 slot)	No
Battery Capacity is not battery life. No endurance test is implied.	3600 mAh Non-removable Li-Ion	2800 mAh Non-removable Li-Po
Operating system OS	Android 7.1.1 (Nougat) upgradable to Android 8 (Oreo); ZenUI 4	Android 10
Chipset	Qualcomm MSM8998 Snapdragon 835 (10 nm)	Qualcomm SDM855 Snapdragon 855 (7 nm)
NFC	Yes	Yes
Headphone jack	Yes	No

Display

Display — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	83.4 cm2	80.7 cm2
Screen format	16:9 (height:width)	19:9 (height:width)
Screen to body ratio	70.3%	79.8%
PPI /points per inch/	401 PPI	444 PPI
Screen protection	Corning Gorilla Glass 5	Corning Gorilla Glass 5

Camera and Video

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

Camera and Video — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Rear camera, main	12 MP Dual	12.2 MP Dual
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	12.2 MP f/1.7 28mm (wide) 1/2.55'' 1.4µm dual pixel PDAF OIS -16 MP f/2.4 45mm (telephoto) 1.0µm PDAF OIS 2x optical zoom
Functions	HDR	Auto-HDR
Video	1080p@30fps	1080p@30fps
Front camera, selfie	8 MP Single	8 MP Dual
Specifications	8 MP f/1.9 1/3.2'' 22mm (wide) 1.4µm PDAF	8 MP f/2.0 22mm (wide) 1.22µm no AF TOF 3D camera
DxOMark Main Score *	Unknown	112
DxOMark Photo *	Unknown	93
DxOMark Video *	Unknown	91
DxOMark Selfie Score *	Unknown	92

Performance

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

Performance — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Processor CPU	Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)	Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
Graphics processor GPU	Adreno 540	Adreno 640
Antutu 8 score *	Unknown	425000
GeekBench 5 Single Core *	Unknown	555
GeekBench 5 Multi-Core *	Unknown	2165

General specs

General specs — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Release date	2017 August	2019 October
Colors	Moonlight White Pure Black	Clearly White Just Black Oh So Orange
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	390 EUR	750 EUR
Battery life	Talking time- Up to 27 h 30 min (3G)	Unknown
Body build	Front/back glass (Gorilla Glass 5) & aluminum frame	Front/back glass (Gorilla Glass 5) aluminum frame

Communication and Connectivity

Communication and Connectivity — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
SIM card	Hybrid Dual SIM (Nano-SIM dual stand-by)	Nano-SIM card & eSIM
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 CDMA 800 / 1900 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 12(700) 13(700) 17(700) 20(800) 25(1900) 26(850) 28(700) 32(1500) 38(2600) 39(1900) 40(2300) 41(2500) 66(1700/2100) 71(600) - Global LTE band 1(2100) 14(700) 18(800) 19(800) 29(700) 30(2300) 46(5200) 48 71(600) - USA
Speed	HSPA 42.2/5.76 Mbps LTE-A (3CA) Cat12 600/150 or 100 Mbps	HSPA 42.2/5.76 Mbps LTE-A (5CA) Cat18 1200/150 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 dual-band Wi-Fi Direct DLNA hotspot
GPS	Yes with A-GPS GLONASS BDS GALILEO	Yes with A-GPS GLONASS BDS GALILEO
USB	Type-C 1.0 reversible connector	3.1 Type-C 1.0 reversible connector
Bluetooth	5.0 A2DP EDR LE aptX	5.0 A2DP LE aptX HD

Music and Audio

Music and Audio — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Radio	FM radio	No
Others	24-bit/192kHz audio -DTS sound -Active noise cancellation with dedicated mic	DCI-P3 100% -HDR -Always-on display -90Hz Active noise cancellation with dedicated mic

Other features

Other features — specifications for Zenfone 4 Pro ZS551KL, Pixel 4.
Specification	Zenfone 4 Pro ZS551KL	Pixel 4
Dop	Sensors Fingerprint (front-mounted) accelerometer gyro proximity compass color spectrum Infrared port - Fast battery charging: 50% in 32 min	Sensors Face ID accelerometer gyro proximity compass barometer - Fast battery charging 18W -USB Power Delivery 2.0 -QI wireless charging - IP68 dust/water resistant (up to 1.5m for 30 mins)

Asus Zenfone 4 Pro ZS551KL vs Google Pixel 4