Side-by-side comparison

Asus Zenfone 4 Pro ZS551KL vs Google Pixel 3a XL

Name: Asus Zenfone 4 Pro ZS551KL
Brand: Asus
SKU: appsapk-1167
Rating: 8.9 (924 reviews)

Asus

Asus Zenfone 4 Pro ZS551KL

8.9924 views

Google

Google Pixel 3a XL

8.9986 views

Wins 3 specs

Asus Zenfone 4 Pro ZS551KL — quick specs

Network
LTE / HSPA / GSM
Display
5.5 inches · 1080×1920
Camera
12 MP
Memory
6 GB RAM
Battery
3600 mAh
OS
Android 7.1

Google Pixel 3a XL — quick specs

Network
LTE / HSPA / EVDO
Display
6.0 inches · 1080×2160
Camera
12.2 MP
Memory
4 GB RAM
Battery
3700 mAh
OS
Android 9.0

● Full specification comparison

Spec

Asus Zenfone 4 Pro ZS551KL

Google Pixel 3a XL

NETWORK

Technology

GSM / HSPA / LTE

GSM / CDMA / HSPA / EVDO / LTE

Technology

AGSM / HSPA / LTE

BGSM / CDMA / HSPA / EVDO / LTE

2G bands

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

GSM 850 / 900 / 1800 / 1900, CDMA 800 / 1900

2G bands

AGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

BGSM 850 / 900 / 1800 / 1900, CDMA 800 / 1900

3G bands

HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100, CDMA2000 1xEV-DO

3G bands

AHSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100

BHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100, CDMA2000 1xEV-DO

4G bands

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)

LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 14(700), 17(700), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 38(2600), 40(2300), 41(2500), 66(1700/2100), 71(600)

4G bands

ALTE 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)

BLTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 14(700), 17(700), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 38(2600), 40(2300), 41(2500), 66(1700/2100), 71(600)

Speed

HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps

HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat11 600/75 Mbps

Speed

AHSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps

BHSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat11 600/75 Mbps

LAUNCH

Announced

2017, August

2019, May

Announced

A2017, August

B2019, May

Status

Available. Released 2017, October

Available. Released 2019, May

Status

AAvailable. Released 2017, October

BAvailable. Released 2019, May

BODY

Dimensions

156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)

160.1 x 76.1 x 8.2 mm (6.30 x 3.00 x 0.32 in)

Dimensions

A156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)

B160.1 x 76.1 x 8.2 mm (6.30 x 3.00 x 0.32 in)

Weight

175 g (6.17 oz)

167 g (5.89 oz)

Weight

A175 g (6.17 oz)

B167 g (5.89 oz)

SIM

Hybrid Dual SIM (Nano-SIM, dual stand-by)

Nano-SIM, Electronic SIM card (eSIM)

SIM

AHybrid Dual SIM (Nano-SIM, dual stand-by)

BNano-SIM, Electronic SIM card (eSIM)

Build

Front/back glass (Gorilla Glass 5) & aluminum frame

Front glass, plastic body

Build

AFront/back glass (Gorilla Glass 5) & aluminum frame

BFront glass, plastic body

DISPLAY

Type

AMOLED capacitive touchscreen, 16M colors

OLED capacitive touchscreen, 16M colors

Type

AAMOLED capacitive touchscreen, 16M colors

BOLED capacitive touchscreen, 16M colors

Size

5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio)

6.0 inches, 92.9 cm2 (~76.3% screen-to-body ratio)

Size

A5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio)

B6.0 inches, 92.9 cm2 (~76.3% screen-to-body ratio)

Resolution

1080 x 1920 pixels, 16:9 ratio (~401 ppi density)

1080 x 2160 pixels, 18:9 ratio (~402 ppi density)

Resolution

A1080 x 1920 pixels, 16:9 ratio (~401 ppi density)

B1080 x 2160 pixels, 18:9 ratio (~402 ppi density)

Protection

Corning Gorilla Glass 5

Asahi Dragontrail Glass, Always-on display

Protection

ACorning Gorilla Glass 5

BAsahi Dragontrail Glass, Always-on display

PLATFORM

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

Android 9.0 (Pie)

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

BAndroid 9.0 (Pie)

Chipset

Qualcomm MSM8998 Snapdragon 835 (10 nm)

Qualcomm SDM670 Snapdragon 670 (10 nm)

Chipset

AQualcomm MSM8998 Snapdragon 835 (10 nm)

BQualcomm SDM670 Snapdragon 670 (10 nm)

CPU

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

Octa-core (2x2.0 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)

CPU

AOcta-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)

BOcta-core (2x2.0 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)

GPU

Adreno 540

Adreno 615

GPU

AAdreno 540

B Adreno 615

MEMORY

Card slot

microSD, up to 1 TB (uses shared SIM slot)

Card slot

AmicroSD, up to 1 TB (uses shared SIM slot)

BNo

Internal

64GB 6GB RAM, 128GB 6GB RAM

64GB 4GB RAM

Internal

A64GB 6GB RAM, 128GB 6GB RAM

B64GB 4GB RAM

MAIN CAMERA

Dual

12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, Laser AF, 4-axis OIS 16 MP, 50mm (telephoto), 1/3.1", 1.0µm, AF, 2x optical zoom";

—

Dual

A12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, Laser AF, 4-axis OIS 16 MP, 50mm (telephoto), 1/3.1", 1.0µm, AF, 2x optical zoom";

B—

Single

—

12.2 MP, f/1.8, 28mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS"

Single

A—

B12.2 MP, f/1.8, 28mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS"

SELFIE CAMERA

Single

8 MP, f/1.9, 1/3.2", 22mm (wide), 1.4µm, PDAF"

8 MP, f/2.0, 24mm (wide), 1.12µm"

Single

A8 MP, f/1.9, 1/3.2", 22mm (wide), 1.4µm, PDAF"

B8 MP, f/2.0, 24mm (wide), 1.12µm"

SOUND

Loudspeaker

Yes, dual speakers

Yes, with stereo speakers

Loudspeaker

AYes, dual speakers

BYes, with stereo speakers

3.5mm jack

Yes 24-bit/192kHz audio DTS sound Active noise cancellation with dedicated mic

Yes

3.5mm jack

AYes 24-bit/192kHz audio DTS sound Active noise cancellation with dedicated mic

BYes

COMMS

WLAN

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot

WLAN

AWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot

BWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot

Bluetooth

5.0, A2DP, EDR, LE, aptX

5.0, A2DP, LE, aptX HD

Bluetooth

A5.0, A2DP, EDR, LE, aptX

B5.0, A2DP, LE, aptX HD

GPS

Yes, with A-GPS, GLONASS, BDS, GALILEO

Yes, with A-GPS, GLONASS, GALILEO

GPS

AYes, with A-GPS, GLONASS, BDS, GALILEO

BYes, with A-GPS, GLONASS, GALILEO

USB

Type-C 1.0 reversible connector

2.0, Type-C 1.0 reversible connector

USB

AType-C 1.0 reversible connector

B2.0, Type-C 1.0 reversible connector

Radio

FM radio

Radio

AFM radio

BNo

Infrared port

Yes

—

Infrared port

AYes

B—

NFC

Yes

NFC

AYes

BYes

FEATURES

Sensors

Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum

Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer

Sensors

AFingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum

BFingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer

BATTERY

Charging

Fast battery charging 18W: 50% in 32 min

Fast battery charging 18W USB Power Delivery 2.0

Charging

AFast battery charging 18W: 50% in 32 min

BFast battery charging 18W USB Power Delivery 2.0

Battery Type

Non-removable Li-Ion 3600 mAh battery

Non-removable Li-Po 3700 mAh battery

Battery Type

ANon-removable Li-Ion 3600 mAh battery

BNon-removable Li-Po 3700 mAh battery

MISC

Colors

Moonlight white, Pure Black

Just Black, Clearly White, Purple-ish

Colors

AMoonlight white, Pure Black

BJust Black, Clearly White, Purple-ish

Models

Z01GD

G020C, G020G, G020F

Models

AZ01GD

BG020C, G020G, G020F

Price

About 550 USD

532 USD

Price

AAbout 550 USD

B532 USD

Cells highlighted in green indicate a measurably better spec on that phone (battery capacity, RAM, storage, display size). Text-only specs are shown side by side without highlighting.

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