OnePlus 8 Pro (128GB) vs Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
Side by side comparison between OnePlus 8 Pro vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.78"
AMOLED
AMOLED
1440x3168
48
MP
MP
16mp
8GB
RAM
RAM
Octa-core
4510
mAh
mAh
(Non removable)
vs
6.8"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
5 Advantages 
20 Advantages | 31 Common items in both devices |
| 128GB (106GB available) / 128GB (101GB available) |
| Aluminum frame, glass front/back |
| Fluid AMOLED / Dynamic AMOLED |
| HDR10+ |
| 120Hz |
| Digital and optical zoom |
| LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus on both cameras |
| +24 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Model | OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) |
| Other model names | OnePlus 8 Pro 5G (128GB + 8GB RAM) | Galaxy S21 Ultra 5G (SM-G998U1) Unlocked |
| Country or region available |  (Global, International) |  USA |
| Brand | OnePlus | Samsung |
| Release date | 4/21/2020, Announced: 4/14/2020 | 1/29/2021, Announced: 1/14/2021 |
| Depth | 8.5 millimeters (0.33 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 74.3 x 165.3 millimeters (2.93 x 6.51 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
| Weight | 199 grams (6.97 ounces) | 227 grams (7.95 ounces) |
| Build, materials | Aluminum frame, glass front/back Back: Gorilla Glass 5 | Aluminum frame, glass front/back |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Display type | Fluid AMOLED | Dynamic AMOLED |
| Screen size | 6.78" inches | 6.8" inches |
| Screen-to-body ratio | ~91% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
| Display resolution | 1440x3168 pixels (19.8:9) | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 513 PPI | 516 PPI |
| Colors | 1 billion | 16 million |
| Scratch-resistant glass | Gorilla Glass | Gorilla Glass Victus |
| Refresh rate | 120Hz | 120Hz |
| Display features | 1300nits[peak] HDR10+ | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| System version | Android 10 | Android 11 |
| Firmware update | Android 11 | Android 14 |
| User Interface | OxygenOS 10 / 11 | One UI 3.1 / 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 865 (SM8250) (7nm) | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 650 (250-587MHz) | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | AnTuTu: 573276 (v8) Geekbench: 3374 (v5.1) GFXBench: 24fps (ES 3.1 onscreen) | AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| RAM memory | 8GB LPDDR5 | 12GB LPDDR5 |
| Internal storage | 128GB (106GB available) UFS 3.0 | 128GB (101GB available) UFS 3.1 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 2000/1024 Mbps | 5000/1920 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G, 4G, 5G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 800/850/900/1700/1800/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat18 VoLTE Europe model: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (34, 38, 39, 40, 41, 42, 46) America model: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (34, 38, 39, 40, 41, 46, 48) India model: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26) TD-LTE (34, 38, 39, 40, 41, 46) China model: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26) TD-LTE (34, 38, 39, 40, 41) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Primary 5G network | SA/NSA Europe model: (1, 3, 7, 28, 78) America model: (2, 5, 41, 66, 71) India model: (78) China model: (41, 78, 79) | SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261) |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
| Secondary 2G network | GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 800/850/900/1700/1800/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat18 VoLTE | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
📷 Camera | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Back camera (main camera) | (quad camera) 48 megapixels 48MP ultrawide f/2.213mm1/2.0"0.8µmPDAF 8MP telephoto f/2.41/1.0µmPDAFOIS3x-optical-zoom 5MP depth f/2.4 | (quad camera) 108 megapixels 10MP periscope telephoto f/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video |
| Main camera resolution | 8000x6000 pixels | 12000x9000 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | 8K UHD (7680x4320) 24 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 25mm lens | 26mm lens |
| Sensor size | 1/1.43" inches | 1/1.33" inches |
| Pixel size | 1.12µm pixel | 1.8µm pixel |
| Autofocus | LDAF/PDAF: laser/phase detection autofocus | PDAF: phase detection autofocus on both cameras |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | OIS: Optical stabilization |
| Zoom | Digital and optical zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Supported |
| HDR | HDR photo/video and HDR photo on front camera | HDR photo/video on both cameras |
| Camera extras | 1080p@240fps | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Front camera (secondary) | 16 megapixels | 40 megapixels |
| Front camera resolution | 4608x3456 pixels | 7296x5472 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.5 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | 1/3" inches | 1/2.8" inches |
| Pixel size | 1µm pixel | 0.7µm pixel |
🔉 Sound and multimedia | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Loudspeaker | Stereo sound Dolby Atmos | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| USB | USB 3.1 Type-C, USB OTG On-The-Go | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | Type-C reversible connector |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 5.1 + A2DP/LE | 5.2 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, SBAS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4510 mAh | 5000 mAh |
| Charger, watts | 30W (5V/6A) Wired fast charging | 25W Wired fast charging USB Power Delivery 3.0 |
| Inductive / wireless charging | 30W Qi wireless charging 3W Reverse wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Onyx Black, Glacial Green, Ultramarine Blue • Warp Charge 30T (50% 23min) | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
| OnePlus 8 Pro (128GB) | Galaxy S21 Ultra (SM-G998U1 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.77W/kg (head), 1.02W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |