OnePlus 8 vs. Samsung Galaxy S21+ 5G

Phone Comparison, Reviews and Tests

In depth comparison and review of OnePlus 8 and Samsung Galaxy S21+ 5G. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

OnePlus 8 vs. Samsung Galaxy S21+ 5G Comparison Chart
DESIGN AND DIMENSIONS OnePlus 8 Samsung Galaxy S21+ 5G
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-G996B/DS
Form Factor Touch Touch
Height 160.2 mm 161.5 mm Samsung Galaxy S21+ 5G has greater height than OnePlus 8.
Width 72.9 mm 75.6 mm Samsung Galaxy S21+ 5G has greater width than OnePlus 8.
Depth 8 mm 7.8 mm Samsung Galaxy S21+ 5G is narrower than OnePlus 8.
Weight 180 g 200 g OnePlus 8 is lighter than OnePlus 8.
Body Colour Black | Onyx black | Glacial green Phantom black | Phantom silver | Phantom violet | Phantom gold | Phantom red
Protection - Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) - Yes Samsung Galaxy S21+ 5G is waterproof.
IP rating - IP68
SAR Value 0.86 W/kg 1.335 W/kg (body), 0.541 W/kg (head), 2.23 W/kg (limb)
Connector Type USB Type-C - 24 pin USB-C USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY OnePlus 8 Samsung Galaxy S21+ 5G
Display Type OLED display OLED display
Display Technology Fluid Amoled Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 6.55" 6.7" Samsung Galaxy S21+ 5G has larger screen size than OnePlus 8.
Screen Resolution (Display Resolution) 2400 x 1080 pixels 2400 x 1080 pixels Both phones have the same screen resolution.
Display Format QHD+ Full HD+
Pixel Density 402 ppi 394 ppi OnePlus 8 has better pixel density than Samsung Galaxy S21+ 5G.
Aspect Ratio 20:9 -
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
HDR Yes Yes Both phones have HDR.
HDR Technology HDR10+ HDR10+
Display Enhancement Technology - Eye Comfort Shield
Display Refresh Rate - 120 Hz
Display Features Reading mode, night mode, Wide colour display (P3), 90 Hz Fluid Display AOD(Always On Display)
Display Protection (Screen Protector) Corning Gorilla Glass 3D (scratch resistant glass) Corning Gorilla Glass Victus (scratch resistant glass)
PROCESSOR OnePlus 8 Samsung Galaxy S21+ 5G
Processor Type (CPU) Qualcomm Snapdragon 865 Samsung Exynos 2100
Clock Speed 2.84 GHz 2.9 GHz Samsung Galaxy S21+ 5G has higher clock speed than OnePlus 8.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes - OnePlus 8 has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 650 Mali-G78 MP14
MEMORY OnePlus 8 Samsung Galaxy S21+ 5G
RAM LPDDR4X SDRAM - 8 GB LPDDR5 SDRAM - 8 GB Both phones have the same RAM size.
Internal Memory Size (Storage Capacity) 128 GB 128 GB Both phones have the same internal memory capacity.
User Memory 100 GB 102.2 GB
Memory Interface UFS 3.0 -
CAMERA OnePlus 8 Samsung Galaxy S21+ 5G
MAIN CAMERA
Number of Main Cameras 3 3
Sensor Resolution 48 Megapixel 12 Megapixel OnePlus 8 has better camera resolution than Samsung Galaxy S21+ 5G.
Sensor Size 1/1.4" -
Sensor Name Sony Exmor RS IMX586 sensor -
Lens Type - Ultra wide-angle lens
Lens Aperture F/1.75 F/2.2 OnePlus 8 has better lens aperture than OnePlus 8.
Lens Construction 6-element -
Field of View (FoV) - 120 degree(s)
Pixel Size 0.8 μm 1.4 μm Samsung Galaxy S21+ 5G has larger camera pixel size than OnePlus 8.
Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) Both phones have optical image stabilization.
Focus Adjustment Automatic Automatic
Laser Auto Focus Yes -
Optical Zoom - 3x
Digital Zoom - 30x
Self-Timer Delay - Yes
Special Effects Portrait, HDR, Studio Face retouch, Grid Line
HDR Mode - Auto HDR mode
Camera Modes Panorama, Time-lapse mode, Pro mode, night mode, portrait mode, Cine Video Mode, Dog, Cat, Nightscape capture mode, Portrait, Ultra shot Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View
Face Recognition (Face ID) Face detection - OnePlus 8 has face detection.
Light Source Dual LED flash High CRI LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 fps 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps
Camera Features (Functions) Noise reduction, GIF animation function, Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Continuous Auto Focus (CAF), RAW image capture, AI scene detection, UltraShot engine Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video
SECOND CAMERA
Sensor Resolution (2nd Camera) 2 Megapixel 12 Megapixel Samsung Galaxy S21+ 5G has better second camera resolution than OnePlus 8.
Sensor Size (2nd Camera) - 1/1.76"
Lens Type (2nd Camera) - Wide-angle lens
Lens Aperture (2nd Camera) F/2.4 F/1.8 Samsung Galaxy S21+ 5G has better second camera lens aperture than OnePlus 8.
Field of View (2nd Camera) - 79 degree(s)
Pixel Size (2nd Camera) 1.75 μm 1.8 μm Samsung Galaxy S21+ 5G has larger second camera pixel size than OnePlus 8.
Camera Features (2nd Camera) - OIS (Optical Image Stabilisation), Super Speed Dual Pixel AF
THIRD CAMERA
Sensor Resolution (3rd Camera) 16 Megapixel 64 Megapixel Samsung Galaxy S21+ 5G has higher resolution third camera than OnePlus 8.
Sensor Size (3rd Camera) - 1/1.72"
Lens Type (3rd Camera) Ultra wide-angle lens Telephoto lens
Lens Aperture (3rd Camera) F/2.2 F/2.0 Samsung Galaxy S21+ 5G has better third camera lens aperture than OnePlus 8.
Field of View (3rd Camera) 116 degree(s) 76 degree(s) OnePlus 8 has larger third camera lens field of view than Samsung Galaxy S21+ 5G.
Pixel Size (3rd Camera) - 0.8 μm
Camera Features (3rd Camera) - Phase Detect Auto-Focus (PDAF)
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 16 Megapixel 10 Megapixel OnePlus 8 has better front camera resolution than Samsung Galaxy S21+ 5G.
Sensor Name (Front) Sony Exmor RX IMX471 sensor -
Lens Aperture (Front) F/2.45 F/2.2 Samsung Galaxy S21+ 5G has better front lens aperture than OnePlus 8.
Field of View (Front) - 80 degree(s)
Pixel Size (Front) 1 μm 1.22 μm Samsung Galaxy S21+ 5G has larger front camera pixel size than OnePlus 8.
Focus Adjustment Focus free Automatic
Special Effects (Front) HDR, face retouch -
Camera Modes (Front) Time-lapse mode -
Light Source (Front) Display flash -
Video Resolutions (Front) 1920 x 1080 (1080p) at 30 fps -
Camera Features (Front) Electronic Image Stabiliser (EIS) Dual Pixel AF
BATTERY AND CHARGING OnePlus 8 Samsung Galaxy S21+ 5G
Battery Capacity (Battery Size) 4300 mAh 4800 mAh Samsung Galaxy S21+ 5G has larger battery capacity than OnePlus 8.
Fast Charging Technology Warp Charge 30 technology, Warp Charge 30T technology Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 Both phones have fast charging technology.
Wireless Charging - Yes Samsung Galaxy S21+ 5G can be charged wirelessly.
Wireless Charging Standards - WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare
Talk Time 1740 minutes 2400 minutes Samsung Galaxy S21+ 5G has longer battery life when making calls than OnePlus 8.
Run Time Details Talk: up to 1740 min
Standby: up to 391 hrs
Talk (4G): up to 2400 min
Active online usage (LTE): up to 15 hrs
Active online usage (Wi-Fi): up to 17 hrs
Playback (wireless video): up to 22 hrs
Playback (wireless audio): up to 75 hrs
Battery Technology Lithium Ion -
CELLULAR OnePlus 8 Samsung Galaxy S21+ 5G
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 5G 5G Both phones have the same mobile network generation.
Operating System OxygenOS (based on Android 10) Android 11
Intelligent Assistant - Bixby
Payment Technology - Samsung Pay
Navigation GPS, A-GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS OnePlus 8 Samsung Galaxy S21+ 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, LTE Advanced, FDD-LTE, TDD-LTE, 5G NR FR1 FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900, 1700, 800 2100, 1900, 1700, 850, 900
4G LTE Band 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, Band 32, Band 34, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, Band 66 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, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, FDD 1700 - 2110 AWS-3 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band N1, n3, n7, n28, n78 N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40
5G NR Frequency FDD 2100, FDD 1800, FDD 2600, FDD 700APT, TDD TD 3500 FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11a/b/g/n/ac, IEEE 802.11a/b/g/n/ac/ax IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 5.1 Bluetooth 5.0
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Modem Snapdragon X55 5G -
Messaging Services SMS, MMS -
MEDIA OnePlus 8 Samsung Galaxy S21+ 5G
Supported Digital Audio Standards WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, apt-X, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, SBC, apt-X HD, EAC3-JOC, AC-4 WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128
Supported Digital Video Standards MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound
FEATURES OnePlus 8 Samsung Galaxy S21+ 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor
Security Devices Fingerprint reader (under display), face recognition Fingerprint reader (under display), face recognition
Additional Phone Features Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster
OTHERS OnePlus 8 Samsung Galaxy S21+ 5G
Included Accessories SIM card removal tool, sticker, screen protector, USB-C cable, protective case, Warp Charge 30 power adapter SIM card removal tool, USB-C to USB-C cable
Compliant Standards - IP68, HAC (Hearing Aid Compatible)
Max Depth of Water Resistance - 1.5 m
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