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UMX U680 vs Samsung Galaxy S21 Ultra vs Samsung Galaxy Note9

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

4.0 inches
6.8 inches
6.4 inches

Resolution:

3200 x 1440 pixels, 20:9 ratio, 516 PPI
2960 x 1440 pixels, 18.5:9 ratio, 516 PPI

Technology:

Dynamic AMOLED
Super AMOLED

Refresh rate:

120Hz (adaptable)

Screen-to-body:

89.33 %
83.51 %

Peak brightness:

1500 cd/m2 (nit)

Touchscreen:

Capacitive, Multi-touch

Features:

Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 888
Qualcomm Snapdragon 845 SDM845

Processor:

Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm
Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm

GPU:

Yes
Adreno 660
Adreno 630

RAM:

12GB LPDDR5
6GB LPDDR4

Internal storage:

128GB (UFS 3.1), not expandable
128GB

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (4.1)
Android (11), Samsung One UI
Android (10, 9.0 Pie, 8.1 Oreo), Samsung One UI

Battery

Capacity:

800 mAh
5000 mAh
4000 mAh

Type:

Li - Ion, User replaceable
Li - Polymer, Not user replaceable
Li - Ion, Not user replaceable

Charging:

Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Single camera
Quad camera
Dual camera

Main camera:

5 MP
108 MP (OIS, Laser and PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.8; Focal length: 24 mm; Sensor size: 1/1.33"; Pixel size: 0.8 μm
Aperture size: F1.5/F2.4; Focal length: 26 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Second camera:

10 MP (Telephoto, OIS, PDAF)
12 MP (Telephoto, OIS, Autofocus)

Specifications:

Optical zoom: 3.0x; Aperture size: F2.4; Focal Length: 70 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm
Optical zoom: 2.0x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.4"; Pixel size: 1 μm

Third camera:

12 MP (Ultra-wide, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

10 MP (Periscope, OIS, PDAF)

Specifications:

Optical zoom: 10.0x; Aperture size: F4.9; Focal Length: 240 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm

Video recording:

Yes
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

OIS, HDR, Hyperlapse, Video light, EIS
Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, EIS

Front:

40 MP (PDAF, HDR)
8 MP (Wide Angle, Autofocus)

Video capture:

3840x2160 (4K UHD) (60 fps)
2560x1440 (QHD) (30 fps)

Design

Dimensions:

4.80 x 2.52 x 0.53 inches (122 x 64 x 13.5 mm)
6.50 x 2.98 x 0.35 inches (165.1 x 75.6 x 8.9 mm)
6.37 x 3.01 x 0.35 inches (161.9 x 76.4 x 8.8 mm)

Weight:

4.23 oz (120.0 g)
8.04 oz (229.0 g)
7.09 oz (201.0 g)

Materials:

Back: Glass (Corning Gorilla Glass Victus); Frame: Aluminum
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum

Resistance:

Water, Dust; IP68
Water, Dust; IP68

Biometrics:

2D Face unlock, Ultrasonic in-screen fingerprint
Iris scanner, 2D Face unlock, Fingerprint (touch)

Features:

Notification light, Stylus

Keys:

Right: Volume control, Lock/Unlock key
Left: Volume control, Lock/Unlock key; Right: Other

Colors:

Phantom black, Silver
Midnight black, Ocean blue, Cloud silver, Lavender purple

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46

UMTS:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA

SIM type:

Nano SIM
Nano SIM

HD Voice:

Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Multiple speakers

Features:

Album art cover, Background playback
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
32-Bit DAC, Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation, Video recording
for Noise cancellation

Connectivity & Features

Bluetooth:

Yes
5.1
5.0

Wi-Fi:

Yes; Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

microUSB, USB 2.0
Type-C (reversible), USB 3.2
Type-C (reversible), USB 3.1

Features:

Mass storage device, Charging
Charging, Headphones port, OTG, Video out
Charging, OTG, Video out

Location:

GPS, A-GPS
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

Tethering, Computer sync, OTA sync
NFC, ANT+
NFC, ANT+

Hearing aid compatible:

M3, T3
M3, T3
M4, T3

Phone features

Notifications:

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone

Other features:

Voice dialing, Voice commands, Voice recording, TTY/TDD

Regulatory Approval

FCC approval:

Date approved:

Dec 22, 2020
Jul 03, 2018

FCC ID value:

A3LSMG998U
A3LSMN960U

Measured SAR:

Head:

0.77 W/kg
0.27 W/kg

Body:

1.02 W/kg
0.76 W/kg

Simultaneous Transmission:

1.59 W/kg
1.59 W/kg

Wireless Router:

1.16 W/kg
1.35 W/kg

Phablet:

3.15 W/kg
3.90 W/kg

Buyers information

Price:

$ 1200
$ 1000

In The Box:

C to C Data Cable, Ejection Pin
S Pen, USB Cable, Earphones, SIM removal tool, USB power adaptor, USB connector, Pen, nibs, Tweezer, Clear cover case, Quick start guide, USB connector leaflet.

Availability

Officially announced:

Jan 14, 2021
Aug 09, 2018
FCC OKs Cingular\'s purchase of AT&T Wireless