In depth comparison and review of OnePlus 7T 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.
DESIGN AND DIMENSIONS | OnePlus 7T | Samsung Galaxy S21 5G |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | SM-G991U1 | |
Form Factor | Touch | Touch | |
Height | 160.94 mm | 151.7 mm | OnePlus 7T has greater height than Samsung Galaxy S21 5G. |
Width | 74.44 mm | 71.2 mm | OnePlus 7T has greater width than Samsung Galaxy S21 5G. |
Depth | 8.13 mm | 7.9 mm | Samsung Galaxy S21 5G is narrower than OnePlus 7T. |
Weight | 190 g | 171 g | Samsung Galaxy S21 5G is lighter than OnePlus 7T. |
Body Colour | Glacier blue | Phantom grey | Phantom white | |
Body Material | Frosted glass, 3D Gorilla Glass | - | |
Protection | - | Dustproof, splashproof, water-resistant | |
Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S21 5G is waterproof. |
IP rating | - | IP68 | |
SAR Value | - | 1.58 W/kg (simultaneous), 1.11 W/kg (wireless router), 1.08 W/kg (body), 0.74 W/kg (head) | |
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 7T | Samsung Galaxy S21 5G |
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Display Type | OLED display | OLED display | |
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Display Technology | Fluid Amoled | Infinity-O Dynamic AMOLED 2X | |
Screen Size (Display Size) | 6.55" | 6.2" | OnePlus 7T has larger screen size than Samsung Galaxy S21 5G. |
Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2400 x 1080 pixels | Both phones have the same screen resolution. |
Display Format | - | Full HD+ | |
Pixel Density | 402 ppi | 421 ppi | Samsung Galaxy S21 5G has better pixel density than OnePlus 7T. |
Aspect Ratio | 20:9 | - | |
Max Brightness | 1000 cd/m² | - | |
Colour Depth | - | 16.7 million colours | |
HDR | - | Yes | Samsung Galaxy S21 5G has HDR. |
HDR Technology | HDR10+ | HDR10+ | |
Display Enhancement Technology | - | Eye Comfort Shield | |
Display Refresh Rate | 90 Hz | 120 Hz | Samsung Galaxy S21 5G has better refresh rate than OnePlus 7T. |
Display Features | 2.5D Glass, Reading mode, night mode, DCI-P3 Wide colour gamut, Video Enhancer | AOD(Always On Display), Video Wallpaper | |
Display Protection (Screen Protector) | - | Corning Gorilla Glass Victus (scratch resistant glass) |
PROCESSOR | OnePlus 7T | Samsung Galaxy S21 5G |
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Processor Type (CPU) | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 888 | |
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Clock Speed | 2.96 GHz | 2.84 GHz | OnePlus 7T has higher clock speed than Samsung Galaxy S21 5G. |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
64-bit Architecture | Yes | - | OnePlus 7T has 64-bit architecture. |
Graphics System (GPU) | Qualcomm ADRENO 640 | - |
MEMORY | OnePlus 7T | Samsung Galaxy S21 5G |
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RAM | LPDDR4X SDRAM - 8 GB | LPDDR5 SDRAM - 8 GB | Both phones have the same RAM size. |
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Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
User Memory | - | 101.2 GB | |
Memory Interface | UFS 3.0 | - |
CAMERA | OnePlus 7T | Samsung Galaxy S21 5G |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 3 | |
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Sensor Resolution | 48 Megapixel | 12 Megapixel | OnePlus 7T has better camera resolution than Samsung Galaxy S21 5G. |
Sensor Size | - | 1/1.76" | |
Sensor Name | Sony Exmor RS IMX586 sensor | - | |
Lens Type | - | Wide-angle lens | |
Lens Aperture | F/1.6 | F/1.8 | OnePlus 7T has better lens aperture than OnePlus 7T. |
Lens Construction | 7-element | - | |
Field of View (FoV) | - | 79 degree(s) | |
Pixel Size | 0.8 μm | 1.8 μm | Samsung Galaxy S21 5G has larger camera pixel size than OnePlus 7T. |
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 | 2x | 3x | Samsung Galaxy S21 5G has better optical zoom than OnePlus 7T. |
Digital Zoom | - | 30x | |
Self-Timer Delay | - | Yes | |
Special Effects | HDR | Face retouch, Grid Line | |
HDR Mode | - | Auto HDR mode | |
Camera Modes | Panorama, Time-lapse mode, Pro mode, portrait mode, Nightscape capture mode | 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, Portrait, Night, Motion Photo, Mountain, Single Take, Pro Video, Portrait video, Director's View | |
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 1280 x 720 (720p) at 960 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 (8K) at 24 fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps | |
Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Continuous Auto Focus (CAF), RAW image capture, AI scene detection, 4-in-1 Pixel technology, UltraShot engine | Playback zoom, Motion photo, blink detection, QR-code scanner, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Lens smudge, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Super Speed Dual Pixel AF, Quick Measure, Zoom-In Mic, HEIF image capture, 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, AR Doodle, HEVC (High Efficiency Video coding) support, Microphone Control (Pro Video only) |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 16 Megapixel | 12 Megapixel | OnePlus 7T has better second camera resolution than Samsung Galaxy S21 5G. |
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Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
Field of View (2nd Camera) | 117 degree(s) | 120 degree(s) | Samsung Galaxy S21 5G has larger second camera lens field of view than OnePlus 7T. |
Pixel Size (2nd Camera) | - | 1.4 μm |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 12 Megapixel | 64 Megapixel | Samsung Galaxy S21 5G has higher resolution third camera than OnePlus 7T. |
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Sensor Size (3rd Camera) | - | 1/1.72" | |
Lens Type (3rd Camera) | Telephoto 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 7T. |
Field of View (3rd Camera) | - | 76 degree(s) | |
Pixel Size (3rd Camera) | 1 μm | 0.8 μm | OnePlus 7T has larger third camera pixel size than Samsung Galaxy S21 5G. |
Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 5G has optical stabilisation of the third camera. |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 16 Megapixel | 10 Megapixel | OnePlus 7T has better front camera resolution than Samsung Galaxy S21 5G. |
Sensor Name (Front) | Sony Exmor RX IMX471 sensor | - | |
Lens Aperture (Front) | F/2.0 | F/2.2 | OnePlus 7T has better front lens aperture than OnePlus 7T. |
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 7T. |
Focus Adjustment | Focus free | Automatic | |
Special Effects (Front) | HDR, face retouch | - | |
Camera Modes (Front) | Time-lapse mode | - | |
Face Recognition (Face ID) | Face recognition | - | OnePlus 7T has face detection. |
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 7T | Samsung Galaxy S21 5G |
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Battery Capacity (Battery Size) | 3800 mAh | 4000 mAh | Samsung Galaxy S21 5G has larger battery capacity than OnePlus 7T. |
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Fast Charging Technology | Warp Charge 30T technology | Qualcomm Quick Charge 2.0, Adaptive 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 | - | 1800 minutes | |
Run Time Details | - | Talk (LTE): up to 1800 min Active online usage (LTE): up to 14 hrs Active online usage (Wi-Fi): up to 15 hrs Playback (wireless video): up to 19 hrs Playback (wireless audio): up to 72 hrs |
CELLULAR | OnePlus 7T | Samsung Galaxy S21 5G |
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Technology | CDMA2000 1X / GSM / WCDMA (UMTS) | CDMA2000 1X / GSM / WCDMA (UMTS) | |
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Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21 5G has more advanced generation mobile network. |
Operating System | OxygenOS (based on Android 10) | Android 11 | |
Intelligent Assistant | - | Bixby | |
Payment Technology | - | Samsung Pay | |
Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, Galileo |
COMMUNICATIONS | OnePlus 7T | Samsung Galaxy S21 5G |
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Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1, 5G NR FR2 | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | |
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 29, Band 32, Band 34, Band 38, Band 39, Band 40, Band 41, Band 66 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 48, Band 66, Band 71 | |
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 700d, FDD 1500 L, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, 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 700 PS, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3, FDD 600 | |
5G NR Band | - | N41, n71, n260, n261 | |
5G NR Frequency | - | TDD TD 2500, FDD 600, TDD 39GHz, TDD 28GHz | |
Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac/ax | |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
Messaging Services | SMS, MMS | - |
MEDIA | OnePlus 7T | Samsung Galaxy S21 5G |
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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, apt-X HD, EAC3-JOC, AC-4 | WAV, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
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Supported Digital Video Standards | MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
Sound Enhancements | Dolby Atmos sound technology | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound |
FEATURES | OnePlus 7T | Samsung Galaxy S21 5G |
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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 | |
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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, Haptic vibration motor, Fnatic mode, Zen mode, OnePlus Switch | MIMO technology, Screen Write, notification flashlight, Smart Select, Fast Charging, Samsung KNOX, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, TalkBack, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, Bixby key, Bluetooth Scalable Codec, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command |
OTHERS | OnePlus 7T | Samsung Galaxy S21 5G |
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Included Accessories | SIM card removal tool, sticker, USB-C cable, screen protector (pre-applied), protective case, Warp Charge 30 power adapter | SIM card removal tool, USB-C to USB-C cable | |
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Compliant Standards | TUV Rheinland Eye Comfort Certification | VDE, IP68, HAC (Hearing Aid Compatible), SGS Eye Care Display Certification | |
Max Depth of Water Resistance | - | 1.5 m |