Asus ZenFone 6 (2019) vs Samsung Galaxy S21 Ultra Specs Comparison

Design

Dimensions
6.26 x 2.97 x 0.36 inches 159.1 x 75.44 x 9.1 mm	6.50 x 2.98 x 0.35 inches (~0.37 inches with camera bump) 165.1 x 75.6 x 8.9 mm (~9.4 mm with camera bump)
Weight
6.70 oz (190.0 g)	8.04 oz (229.0 g)
Materials
Back: Glass (Corning Gorilla Glass 3)	Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
	Water, Dust; IP68
Biometrics
2D Face unlock, Fingerprint (touch)	2D Face unlock, Ultrasonic in-screen fingerprint
Features
Notification light
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Silver	Phantom black, Silver

Display

Size
6.4-inch	6.8-inch
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	3200x1440px, 20:9 ratio, 516 PPI
Technology
IPS LCD	Dynamic AMOLED
Refresh rate
	120Hz (adaptable)
Screen-to-body
83.82 %	89.33 %
Peak brightness
	1500 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 855 SM8150 (7 nm)	Qualcomm Snapdragon 888 SM8350 (5 nm)
Processor
Octa-core 2840 MHz Kryo 485	Octa-core 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
GPU
Adreno 640	Adreno 660
Memory
6GB (LPDDR4)/64GB	12GB (LPDDR5)/128GB (UFS 3.1)
Storage expansion
microSDXC up to 2000 GB	not expandable
OS
Android (11, 9.0 Pie)	Android (14, 13, 12, 11)

Battery

Type
5000 mAh	5000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 4	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Dual camera, Swivel, Doubles as a selfie camera	Quad camera
Main camera
48 MP (Laser and PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	108 MP (OIS, Laser and PDAF) Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.33" Pixel size: 0.8 μm
Second camera
13 MP (Ultra-wide) Focal Length: 11 mm	12 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
	10 MP (Telephoto, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Fourth camera
	10 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Flash
Dual LED	LED
Video recording
4K UHD (60 fps), 1080p (240 fps), 720p (480 fps) Time-lapse video, Picture-taking during video recording, EIS	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS
Front
	40 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.0, Yes	5.1
WLAN
802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band MIMO, Wi-Fi Direct, Hotspot
USB
Type-C	Type-C, USB 3.2
Hearing aid compatible
M4/T4	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC	NFC, ANT+

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
	32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM, Stereo, RDS
Additional microphone(s)
Noise cancellation	Noise cancellation, Video recording

Cellular

5G
	Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD)
Bands 1, 2, 3, 5, 7, 8, 20, 28	Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 38, 40, 41	Bands 38, 39, 40, 41, 46, 48
3G
Bands 5, 8, 2, 1	Bands 1, 2, 4, 5, 8
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A Pro Cat 20 (2000/150 Mbit/s)
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Apr 16, 2019 FCC ID value: MSQI01WD	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 1.18 W/kg Body: 0.93 W/kg Simultaneous Transmission: 1.58 W/kg Wireless Router: 1.18 W/kg	Head: 0.77 W/kg Body: 1.02 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.16 W/kg Phablet: 3.15 W/kg

Buyers information

MSRP
$ 500	$ 1200 / € 1399
In The Box
18W wall charger, USB type-C cable, SIM eject tool, 3.5 mm earphones, Silicon tips for the earphones, User guide,	C to C Data Cable, Ejection Pin

Availability

Officially announced
May 16, 2019	Jan 14, 2021

Alternative variants

with 128 GB storage

Memory	128GB
MSRP	$ 550

with 256GB storage

Memory	256GB
Colors	Phantom black
MSRP	$ 1250

with 512 GB storage

Memory	12GB/512GB
MSRP	$ 900

with 512GB storage

Memory	16GB/512GB
Colors	Phantom black
MSRP	$ 1380

with 256 GB storage

Memory	8GB/256GB
MSRP	$ 600

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz Cortex-A55
GPU	Mali G78 MP14
Weight	8.01 oz (227.0 g)
5G	Bands SA, NSA, Sub-6
FCC approval	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998B
Measured SAR	Head: 0.16 W/kg Body: 0.72 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.34 W/kg Phablet: 3.86 W/kg

Links

Full specifications
Asus ZenFone 6 (2019) Specs	Samsung Galaxy S21 Ultra Specs
PhoneArena Review
Asus ZenFone 6 (2019) Review	Samsung Galaxy S21 Ultra Review
User Reviews
	Samsung Galaxy S21 Ultra User Reviews