Key Highlights
The Samsung Galaxy S21 Ultra stands tall as the most premium and powerful device in Samsung’s flagship lineup, combining top-tier hardware with a refined design. With its stunning 6.8-inch Dynamic AMOLED 2X display, ultra-sharp 1440 x 3200 resolution, and exceptional brightness, it delivers one of the best viewing experiences on any smartphone. Samsung has also equipped it with a massive battery and one of the most versatile camera systems ever seen on a Galaxy device, making it ideal for photography enthusiasts and power users alike. Interestingly, Samsung—after previously mocking Apple—has now adopted the same accessory-lite approach, offering the S21 Ultra without a charger, headset, or OTG adapter. Compared to the S20 Ultra, the new model is slightly smaller but features a refreshed design and upgraded internal components. It comes in variants starting with 12 GB RAM and 128 GB storage, going up to 16 GB RAM and 512 GB storage. Since the storage is non-expandable, choosing the right variant upfront becomes essential. In regions like Europe and India, Samsung ships the device with its revamped Exynos 2100 chipset. While past Exynos models lagged behind Snapdragon counterparts, Samsung claims significant improvements in performance and efficiency this time around. Paired with Gorilla Glass Victus and IP68 water and dust resistance, the S21 Ultra delivers durability along with flagship performance. The camera experience is where the phone truly shines. The 108 MP main lens captures detailed shots in daylight, while lower-resolution night images are recommended for better clarity in low light. The 3x telephoto and ultra-wide lenses perform well, although the 10x optical zoom and 2x digital zoom remain less impressive. Launched in early 2021 and priced from ₹48,990 in India as of November 2025, the Galaxy S21 Ultra continues to be a strong choice for users seeking premium performance, superb photography, and a feature-packed Android experience.
Full Specifications
Display
- Type
- Dynamic AMOLED
- Size
- 6.8 inches
- Resolution
- 1440 × 3200 pixels
- Aspect ratio
- 20:9
- PPI
- 515 ppi
- Refresh rate
- 120 Hz
- Adaptive refresh rate
- Yes (1-120 Hz)
- Max rated brightness
- 1500 nits
- Max rated brightness in HDR
- 1600 nits
- HDR support
- HDR10+
- Screen protection
- Gorilla Glass Victus
- Screen-to-body ratio
- 89.8%
- Display features
- DCI-P3 | Always-On Display | HDR10+ | Adaptive Refresh | 1500 nits peak brightness
- Display tests
- Covers 100% DCI-P3, up to 1500 nits peak, PWM ~240 Hz, excellent outdoor visibility, very high contrast.
- Sources
- https://www.91mobiles.com/samsung-galaxy-s21-ultra-price-in-india?ty=specs
Design & Build
- Height
- 165.1 mm (6.50")
- Width
- 75.6 mm (2.98")
- Thickness
- 8.9 mm (0.35")
- Weight
- 227 g
- Waterproof
- IP68
- Advanced cooling
- Vapor chamber
- Rear material
- Glass
- Frame material
- Aluminum
- Colors
- Phantom Black | Phantom Silver | Phantom Titanium | Phantom Navy | Phantom Brown
- Fingerprint scanner
- In-display (ultrasonic)
- Screen-to-body ratio (design)
- 89.8%
Performance
- Chipset brand
- Samsung
- Chipset model
- Exynos 2100
- Max clock
- 2900 MHz
- CPU cores
- 8 cores (1 + 3 + 4)
- Architecture
- 1× Cortex-X1 @ 2.9 GHz 3× Cortex-A78 @ 2.8 GHz 4× Cortex-A55 @ 2.2 GHz
- Manufacturing
- Samsung
- Lithography process
- 5 nm
- Neural processor (NPU)
- Yes
- Graphics
- Mali-G78 MP14
- GPU shading units
- 448
- GPU clock
- 854 MHz
- FLOPS
- 765.2 GFLOPS
- Geekbench 6 (Single-Core)
- 1499
- Geekbench 6 (Multi-Core)
- 3699
- Geekbench Compute (GPU)
- 4779
- AnTuTu v10
- 843008
- Benchmarks notes
- https://browser.geekbench.com/android_devices/samsung-galaxy-s21-ultra-5g
Memory
- RAM size
- 12 GB / 16 GB
- Memory type
- LPDDR5
- Channels
- 4
- Storage size
- 128 GB / 256 GB / 512 GB
- Storage type
- UFS 3.1
- Memory card
- No
Software
- Operating system
- Android 11
- ROM
- One UI
- OS size
- 28 GB
Battery
- Capacity
- 5000
- Max charge power
- 25 W
- Battery type
- Li-Ion
- Replaceable
- No
- Wireless charging
- Yes (15 W)
- Reverse charging
- Yes (wireless)
- Fast charging
- 50% in 30 minutes
- Full charging time
- 1 hour 15 minutes
- Battery life tests
- Web browsing: ~10–11 hours Video playback: ~12–13 hours Gaming: ~5 hours
- General battery life
- 15:30 hr
Main camera
- Matrix
- 108 MP (Wide) + 10 MP (Periscope Telephoto) + 10 MP (Telephoto) + 12 MP (Ultra-wide)
- Image resolution
- 12000 × 9000 pixels
- Zoom
- Digital
- Flash
- Single LED
- Stabilization
- Optical + Electronic
- 8K video recording
- Up to 24FPS
- 4K video recording
- Up to 60FPS
- 1080p video recording
- Up to 60FPS
- Slow motion
- 960 FPS (720p), 240 FPS (1080p)
- Angle of widest lens
- 120°
- Camera features
- Laser AF | PDAF | OIS | HDR10+ | 12-bit RAW | Pro Mode | Night Mode | Super Steady | Director’s View | Auto HDR | Panorama
- Lenses
Selfie camera
- Megapixels
- 40 MP
- Image resolution
- 6560 × 4920 pixels
- Aperture
- f/2.2
- Focal length
- 26 mm
- Sensor
- Samsung S5KGH1
- Sensor size
- 1/2.82"
- Pixel size
- 0.7µm
- Autofocus
- PDAF
- Stabilization
- Electronic
- Video resolution
- 4K@60
- Depth sensor (TOF 3D)
- No
Connectivity
- Wi-Fi standard
- Wi-Fi 6 (802.11ax)
- Wi-Fi features
- Dual-band | Wi-Fi Direct | Hotspot | MU-MIMO
- Bluetooth version
- 5.2
- Bluetooth features
- A2DP | LE | aptX | LC3
- USB type
- USB Type-C
- USB version
- 3.2
- USB features
- Charging | OTG | DisplayPort | Data Transfer
- DisplayPort
- Yes
- GPS
- GPS | GLONASS | Galileo | BDS | QZSS
- NFC
- Yes
- Infrared port
- No
Network
- Number of SIM
- 2
- Type of SIM card
- Nano
- Multi SIM mode
- Standby
- eSIM support
- No
- Hybrid slot
- No
- 2G network
- 850 / 900 / 1800 / 1900
- 3G network
- 850 / 900 / 1700(AWS) / 1900 / 2100
- 4G network
- 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 66
- 5G support
- Yes
Sound
- Speakers
- Stereo
- Headphone audio jack
- No
- FM radio
- No
- Dolby Atmos
- Yes
- Speakers test
- 87 dB
Other
- Category
- Flagship
- Announced
- January 2021
- Release date
- January 2021
- Launch price (MSRP)
- ₹105,999
- Sensors
- Light sensor | Proximity sensor | Accelerometer | Barometer | Compass | Gyroscope
- Bundled charger
- Not included