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O2 XDA Denim vs Samsung Galaxy A10 vs Samsung Galaxy S21

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

Comparison mode:

Display

Size:

2.6 inches
6.2 inches
6.2 inches

Resolution:

320 x 240 pixels, 154 PPI
1520 x 720 pixels, 19:9 ratio, 271 PPI
2400 x 1080 pixels, 20:9 ratio, 424 PPI

Technology:

TFT
IPS LCD
Dynamic AMOLED

Refresh rate:

120Hz (adaptive)

Screen-to-body:

32.78 %
80.07 %
86.06 %

Colors:

65 536

Peak brightness:

1300 cd/m2 (nit)

Touchscreen:

Resistive

Features:

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

Hardware

System chip:

Samsung Exynos 7884
Qualcomm Snapdragon 888

Processor:

Single core, 520 MHz, Intel PXA270
Octa-core, 1600 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm

GPU:

Mali-G71 MP2
Adreno 660

RAM:

0.06GB
2GB LPDDR4
8GB LPDDR5

ROM:

256 MB

Internal storage:

32GB, available to use: 22.9 GB
128GB (UFS 3.0), not expandable

Storage expansion:

microSD
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Windows Mobile Professional (6.0)
Android (11, 10, 9.0 Pie), Samsung One UI
Android (12, 11), Samsung One UI

Battery

Capacity:

1300 mAh
3400 mAh
4000 mAh

Type:

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

Battery life test results:

Charging:

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

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Single camera
Single camera
Triple camera

Main camera:

2 MP (Autofocus)
13 MP (Autofocus)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.1"; Pixel size: 1.12 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; Pixel size: 1.8 μm

Second camera:

64 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

12 MP (Ultra-wide, Autofocus)

Specifications:

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

Video recording:

Yes
1920x1080 (Full HD) (30 fps)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

Video calling
Video calling, Video sharing
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

Front:

Yes
5 MP
10 MP (PDAF, HDR)

Video capture:

3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

4.52 x 2.19 x 0.71 inches (115 x 55.8 x 18.2 mm)
6.13 x 2.98 x 0.31 inches (155.6 x 75.6 x 7.94 mm)
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

Weight:

5.29 oz (150.0 g)
5.93 oz (168.0 g)
6.03 oz (171.0 g)

Materials:

Back: Plastic
Back: Plastic; Frame: Aluminum

Resistance:

Water, Dust; IP68

Biometrics:

2D Face unlock
2D Face unlock, Ultrasonic in-screen fingerprint

Features:

Stylus

Keys:

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

Colors:

Black, Blue, Red
Phantom pink, Violet, Gray, White

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), 5(850), 7(2600), 8(900), 20(800 DD)
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)

LTE (TDD):

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

UMTS:

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

Data Speed:

HSDPA 1.8 Mbit/s, UMTS
LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes

SIM type:

Nano SIM
Nano SIM

VoLTE:

Yes

Multimedia

Headphones:

2.5mm jack
3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

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

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM
FM
FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation
for Noise cancellation, Video recording

Connectivity & Features

Bluetooth:

2.0
5.0
5.0

Wi-Fi:

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

USB:

USB 1.1
microUSB, USB 2.0
Type-C (reversible), USB 3.2

Features:

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

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

Other:

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

Hearing aid compatible:

M3, T3

Phone features

Notifications:

Music ringtones (MP3), Polyphonic ringtones (192 voices), Vibration, Phone profiles, Speakerphone

Other features:

Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval:

Date approved:

Jul 19, 2007
Feb 27, 2019
Dec 08, 2020

FCC ID value:

UJU9QDENIM000
A3LSMA105F
A3LSMG991U

Measured SAR:

Head:

1.36 W/kg
0.20 W/kg
0.36 W/kg

Measured in:

1900 MHz

Body:

0.36 W/kg
0.63 W/kg
1.08 W/kg

Measured in:

1900 MHz

Simultaneous Transmission:

0.97 W/kg
3.96 W/kg

Wireless Router:

0.65 W/kg
1.09 W/kg

Phablet:

2.49 W/kg

Buyers information

Price:

$ 800

In The Box:

C to C Data Cable, Ejection Pin

Availability

Officially announced:

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