Compare Samsung Galaxy S21

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Photos relative in size Front Side Back	Samsung Galaxy S21‎ $ 299.99	Samsung Galaxy A21s‎ $ 219.99	OnePlus 9‎ $ 599.99

Dimensions	151.7 x 71.2 x 7.9 mm	163.7 x 75.3 x 8.9 mm	160 x 74.2 x 8.7 mm
Weight	171 grams	192 grams	192 grams
Stand-by	depends on usage	depends on usage	depends on usage
Talk time	depends on usage	depends on usage	depends on usage
Design type
Monoblock
Controls
Facial unlock
Fingerprint recognition	Pressure sensitive in-screen		Pressure sensitive in-screen
Touchscreen	Multi-touch, Capacitive	Multi-touch, Capacitive	Multi-touch, Capacitive
Voice command
Voice dialing
Operating system
Android	11		11
User interface
One UI	3.1
OxygenOS
Display
Auto-rotate
Color display	Adjustable display brightness, 16.777.216 colors (24 bits), Infinity-O Display, Always On feature, HDR10+, Hole-punch display	Adjustable display brightness, 16.777.216 colors (24 bits), Infinity-O Display, Hole-punch display	Adjustable display brightness, 16.777.216 colors (24 bits), Fluid AMOLED, DCI-P3, Hole-punch display
Size	6.2 inch	6.5 inch	6.55 inch
Resolution	2400 x 1080 pixels	1600 x 720 pixels	2400 x 1080 pixels
Refresh rate	120 Hz		120 Hz
Aspect ratio	20:9	20:9	20:9
Peak brightness	1300 nits
Pixels Per Inch (PPI)	424	270	402
Screen-to-body ratio	85.9%	82.8%	87.2%
Hardware
Camera	Tri camera sensor, Auto focus, Image stabilization, Blink Shot, Digital zoom, Effects/camera settings, Flash, Geotagging, Face recognition, Quality settings, Macro mode, Mosaic photo, Burst (Continuous) Shooting, Night mode, Panoramic photo, Portrait mode, Smile Shot, Video recorder, self-timer	Viervoudige camera-sensor, Auto focus, Image stabilization, Blink Shot, Digital zoom, Effects/camera settings, Flash, Geotagging, Face recognition, Quality settings, Macro mode, Mosaic photo, Burst (Continuous) Shooting, Night mode, Panoramic photo, Portrait mode, Smile Shot, Video recorder, self-timer	Tri camera sensor, Auto focus, Image stabilization, Digital zoom, Effects/camera settings, Flash, Geotagging, Face recognition, Quality settings, Macro mode, Mosaic photo, Burst (Continuous) Shooting, Night mode, Panoramic photo, Portrait mode, Video recorder, self-timer
Type	12 MP + 12 MP + 64 MP	2 MP + 2 MP + 48 MP + 8 MP	2 MP + 48 MP + 50 MP
Angle of view (AOV)	120° + 76° + 79°
DxOMark score	116		115
F-number	f/1.8 + f/2.0 + f/2.2	f/2.0 + f/2.2 + f/2.4 + f/2.4	f/1.8 + f/2.2
Max. resolution	(camera) 4032 x 3024 pixels + (video) 3840 x 2160 pixels	(camera) 8000 x 6000 pixels + (video) 3840 x 1644 pixels	(camera) 8192 x 6144 pixels + (video) 7680 x 4320 pixels
Haptic feedback
Integrated antenna
Processor	Samsung Exynos 2100, Octa core	Octa core	Qualcomm Snapdragon 888, Octa core
Clock Frequency	2.4 GHz + 2.8 GHz + 2.9 GHz	2.0 GHz
Secondary camera	Autofocus
Type	10 MP	13 MP	16 MP
Angle of view (AOV)	80°
DxOMark score	98
F-number	f/2.2	f/2.2	f/2.4
Max. resolution	(video) 3840 x 2160 pixels	(camera) 4208 x 3120 pixels	(camera) 4640 x 3480 pixels + (video) 1920 x 1080 pixels
Materials
Aluminium
Dust and waterproof	IP68
Gorilla Glass	7 (Victus)
Plastic
Telephony
Dual SIM
eSIM
Flight mode
Integrated handsfree speaker
nano-SIM (4FF)
Vibrating alert
Videoconferencing
Operating frequency
Quad band
Data network
4G (LTE)	Cat 20 (2 Gbps)		Cat 20 (2 Gbps), Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28
5G			n1, n3, , , n8, n20, n28, n38, , n41, n66, n78
EDGE
GPRS
HSDPA	Cat20 42 Mbps		Cat24 42 Mbps
HSUPA	Cat6 5.76 Mbps		Cat6 5.76 Mbps
UMTS
Personalisation
Multiple homescreens
Widgets
Personal Information Management (PIM)
Agenda
Alarm clock
Calculator
Contact list
Date and time notation
Document viewer	Excel files, PowerPoint files, PDF files, Word files	Excel files, PowerPoint files, PDF files, Word files	Excel files, PowerPoint files, PDF files, Word files
Phonebook with groups
Photo phonebook
Reminder list
Stopwatch & countdown timer
To-do list
Voice memo
Available applications
Image editor
Java application support
Movie editor
Photo album
Video codec support	DivX, H.263, H.264, MPEG-4, Sorenson Spark, VC-1, VP8	H.263, H.264, MPEG-4	H.263, H.264, H.265, MPEG-4
Video file support	3GP, 3G2, ASF, AVI, FLV, M4V, MKV, MP4, WebM, WMV	3GP, 3G2, ASF, AVI, FLV, M4V, MKV, MP4, WebM, WMV	3GP, AVI, FLV, MKV, MOV, MP4, WebM, WMV
Messaging
E-mail	POP3, SMTP, IMAP4	POP3, SMTP, IMAP4	POP3, SMTP, IMAP4
Instant messaging	Google Talk	Google Talk	Google Talk
MMS	Video MMS	Video MMS	Video MMS
Predictive Text Input	T9	T9	T9
SMS	Group messaging, Receive and send concatenated messages	Group messaging, Receive and send concatenated messages	Group messaging, Receive and send concatenated messages
Internet
Internet browser
RSS reader
YouTube support
Navigation
A-GPS
Beidou
Build-in navigation system	Google Maps, Google Maps Navigation	Google Maps, Google Maps Navigation	Google Maps, Google Maps Navigation
Digital Compass
Galileo
GLONASS
GPS receiver
Audio
Audio codec support	AAC, AAC+, AC3, eAAC+, AMR, FLAC, MIDI, Mobile XMF, MP3 VBR, OGG Vorbis, OTA, RTTL/RTX	AAC, AAC+, eAAC+, AMR, FLAC, MIDI, Mobile XMF, MP3 VBR, OGG Vorbis, OTA, RTTL/RTX	AAC, AAC+, AMR, aptX, FLAC, LDAC, MIDI, MP3 VBR, OGG Vorbis
Audio file support	M4A, MP3, WAV, WMA	M4A, MP3, WAV, WMA	APE, M4A, MP3, WAV, WMA
Polyphonic ringtones	MP3 ringtones	MP3 ringtones	MP3 ringtones
Stereo speakers
Build-in memory
Internal memory
Size (RAM)	8 GB	3 GB + 4 GB	12 GB + 8 GB
Storage	128 GB + 256 GB	32 GB + 64 GB	128 GB + 256 GB
Memory card slot		MicroSDHC memory card
Connections
USB	v3.2, Type-C	v2.0, Type-C	v3.1, Type-C
Audio jack plug		3.5 mm
Connectivity
ANT+
Bluetooth	v5.0, Advanced Audio Distribution Profile (A2DP)	v5.0, Advanced Audio Distribution Profile (A2DP)	v5.2, Advanced Audio Distribution Profile (A2DP)
DLNA support
NFC
Synchronisation	ActiveSync, SyncML	ActiveSync, SyncML	ActiveSync, SyncML
Tethering
Ultra-wideband (UWB)
WAP	2.0	2.0	2.0
Wireless Lan (WLAN/Wi-Fi)	Wi-Fi 6 (802.11ax), WiFi Direct support	Wi-Fi 5 (802.11ac), WiFi Direct support	Wi-Fi 6 (802.11ax), WiFi Direct support
Power supply
Battery	Li-ion	Li-ion	Li-poly
Capacity	4000 mAh	5000 mAh	4500 mAh
Fast charging	Samsung Adaptive Fast Charging, USB Power Delivery		OnePlus Warp Charge
Max. power	25 Watt	15 Watt	65 Watt
Wireless charging	Omgekeerd opladen
Max. power	15 Watt		15 Watt
Sensors
Ambient light sensor
Barometer
Gesture recognition
Gyroscope
Proximity sensor