Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB) All specs
Full specifications phone: Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB) specs, detailed technical information, features, price and review. All about this phone.
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The Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB) is a good Android phone with 2.9GHz Octa-core processor that allows run games and heavy applications.
An advantage of the Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB) is the possibility of using two mobile carriers, a Dual-SIM device with two SIM card slots.
Great connectivity of this device includes Bluetooth 5.2 + A2DP/LE, WiFi 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO and NFC to make mobile payments or connection to other devices.
Including the battery, the Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB) phone has 227 grams and it's a very thin device, only 8.9mm.
Summary
*depends on the model⚙️ CPU: Samsung Exynos 2100 / Qualcomm Snapdragon 888 (SM8350)*
🔥 AnTuTu
657150 (v8), 727634 (v9)
🔥 AnTuTu
657150 (v8), 727634 (v9)
🤖 Android 11
🔄 Android 14
🔄 Android 14
📱 6.8"
Dynamic AMOLED
120Hz
Dynamic AMOLED
120Hz
🔳 RAM: 12GB / 16GB*
💽 ROM: 128GB / 256GB / 512GB*
💽 ROM: 128GB / 256GB / 512GB*
🔌 WIFI6, BT5.2, FM, NFC
📷 (quad camera) 108MP + 10MP + 10MP + 12MP
🤳 (front) 40MP
🤳 (front) 40MP
🔋 5000mAh
⚡ 25W
⚡ 25W
📱 Model features | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Model | Galaxy S21 Ultra (SM-G998B/DS 256GB) |
| Other model names | Galaxy S21 Ultra 5G (SM-G998B/Dual-SIM) |
| Country or region available |  (Global, International) |
| Brand | Samsung |
| Release date | 1/29/2021, Announced: 1/14/2021 |
| Depth | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
| Weight | 227 grams (7.95 ounces) |
| Build, materials | Aluminum frame, glass front/back |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Display type | Dynamic AMOLED |
| Screen size | 6.8" inches |
| Screen-to-body ratio | ~89.4% (screen-to-body ratio) |
| Display resolution | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 516 PPI |
| Colors | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus |
| Refresh rate | 120Hz |
| Display features | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| System version | Android 11 |
| Firmware update | Android 14 |
| User Interface | One UI 3.1 / 4.1 / 5.1 / 6.0 |
⚙️ Processor | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Chipset | 64bit: Samsung Exynos 2100 (5nm) |
| CPU | Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core) |
| GPU graphical controller | ARM Mali-G78 MP14 (854MHz) |
| Performance (benchmark) | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) |
💽 Memory and storage | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| RAM memory | 12GB LPDDR5 |
| Internal storage | 256GB (220GB available) UFS 3.1 |
| External storage | Not supported |
📶 Mobile networks | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 5000/1920 Mbps |
| Network technology | 2G, 3G, 4G, 5G |
| Frequency, bands | Expand band details Collapse details |
| GSM MHz band | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
| Primary 5G network | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
| Secondary 2G network | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Back camera (main camera) | (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 | 12000x9000 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps |
| Flash | LED flash |
| Focal aperture | f/1.8 (aperture) |
| Focal length | 26mm (lens) |
| Sensor size | 1/1.33" inches |
| Pixel size | 1.8µm pixel |
| Autofocus | PDAF: phase detection autofocus on both cameras |
| Touch focus | Supported |
| Image stabilization | OIS: Optical stabilization |
| Zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection |
| BSI sensor | Supported |
| HDR | HDR photo/video on both cameras |
| Camera extras | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Front camera (secondary) | 40 megapixels |
| Front camera resolution | 7296x5472 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) |
| Front flash | Not supported |
| Focal aperture | f/2.2 (aperture) |
| Focal length | 26mm (lens) |
| Sensor size | 1/2.8" inches |
| Pixel size | 0.7µm pixel |
🔉 Sound and multimedia | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Loudspeaker | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 3 microphones |
| Radio | FM |
| TV | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| USB | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | Type-C reversible connector |
| TV output | USB Type-C (reversible) |
| Bluetooth | 5.2 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported |
| Infrared port | Not supported |
🧭 Sensors | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported |
🔋 Battery | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh |
| Charger, watts | 25W Wired fast charging USB Power Delivery 3.0 |
| Inductive / wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
| Talk time autonomy | feature not registered |
| Standby | feature not registered |
➕ Other features | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported |
| Video calling | Supported |
| Ringtones | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 |
| Antenna | Internal antenna |
| Qwerty physical keyboard | Not supported |
| Miscellaneous | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | |
| Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.24W/kg (head), 0.72W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.714W/kg (head), 1.58W/kg (body) |
Samsung Galaxy S21 Ultra versions (variations) with different specifications
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