Xiaomi Redmi K70 Ultra vs Samsung Galaxy S21 Ultra
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Compared 2 smartphones : Xiaomi Redmi K70 Ultra Manufactured in July, 2024, with display 6.67 with chipsetMediaTek Dimensity 9300 Plus, vs Samsung Galaxy S21 Ultra, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Xiaomi Redmi K70 Ultra
- Higher refresh rate: 144Hz
- Lighter design: 211g vs 227g
- Higher battery capacity: 5500mAh vs 5000mAh
- Newer Bluetooth version: 5.4 vs 5.2
- Infrared port
- Includes charger
Reasons to choose Samsung Galaxy S21 Ultra
- Larger display: 6.8in
- Higher pixel density: 515ppi
- Supports Dolby Atmos
- Built-in eSIM
Versions
| Memory Options | - 12/256 GB - 12/512 GB - 16/512 GB - 16/1024 GB - 24/1024 GB |
- 12/128 GB - 12/256 GB - 12/512 GB - 16/256 GB - 16/512 GB |
Review
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
Adjust each parameter’s importance to find the best match for you.
Tests & specs
Specs & test comparisonDisplay
| Type | OLED | Dynamic AMOLED |
| Size | 6.67 in | 6.8 in |
| Resolution | 1220x2712 pixels | 1440x3200 pixels |
| Aspect ratio | 20:9 | 20:9 |
| Pixel density | 446 ppi | 515 ppi |
| Refresh rate | 144 Hz | 120 Hz |
| Adaptive refresh rate | Yes | Yes (10-120 Hz) |
| Max brightness | 4000 nits | 1500 nits |
| HDR support | Yes Dolby Vision | Yes HDR10+ |
| Touch Sampling Rate | 480 Hz | n/a |
| Screen-to-body ratio | 89.1 % | 89.5 % |
| Features | - DCI-P3 - Always-On Display - DC dimming |
- DCI-P3 - Always-On Display |
Design & Build
| Height | 160.4 mm (6.31 in) | 165.1 mm (6.5 in) |
| Width | 75.1 mm (2.96 in) | 75.6 mm (2.98 in) |
| Thickness | 8.4 mm (0.33 in) | 8.9 mm (0.35 in) |
| Weight | 211 g (7.44 oz) | 227 g (8.01 oz) |
| Water resistance | IP68 | IP68 |
| Cooling system | Vapor chamber | n/a |
| Back panel | Glass | Glass |
| Frame | Metal | Metal |
| Colors | - White - Black - Green - Orange - Purple |
- Black - Silver - Gray - Blue |
| Fingerprint sensor | Yes In-Display | Yes In-Display |
Screen-to-body ratio
Performance
| Chipset | MediaTek Dimensity 9300 Plus | Samsung Exynos 2100 |
| Max Frequency | 3400 MHz | 2900 MHz |
| CPU Cores | 8 (1 + 3 + 4) | 8 (1 + 3 + 4) |
| Architecture | - 4/2 (Cortex-A720) - 3/2.85 (Cortex-X4) - 1/3.4 (Cortex-X4) |
- 4/2.2 (Cortex-A55) - 3/2.81 (Cortex-A78) - 1/2.91 (Cortex-X1) |
| Process | TSMC | Samsung |
| Transistor Size | 4 nm | 5 nm |
| Neural Processor | MediaTek APU 790 | Yes |
| Graphics | Mali-G720 Immortalis MP12 | Mali-G78 MP14 |
| GPU Cores | 1536 | 896 |
| GPU Frequency | 1300 MHz | 854 MHz |
| FLOPS | 3993.6 GFLOPS | 1530.4 GFLOPS |
| Geekbench 6 (Single-Core) | 2224 | 1449 |
| Geekbench 6 (Multi-Core) | 7415 | 3892 |
| Geekbench Compute (GPU) | 15810 | n/a |
| CPU | 502823 | 232358 |
| GPU | 855638 | 256356 |
| Memory | 428947 | 163007 |
| UX | 362173 | 191217 |
| NanoReview Score | 2149581 | 843008 |
| Max Surface Temp. | n/a | 40.8 °C |
| Stability | 70 % | 69 % |
| Graphics Test | 80 fps | 31 fps |
| Graphics Score | 13463 | 5221 |
| Writing score | 17583 | n/a |
| Web score | 15413 | n/a |
| Video editing | 6546 | n/a |
| Data manipulation | 14781 | n/a |
| NanoReview Score | 15188 | n/a |
Memory
| RAM Size | - 12 GB - 16 GB - 24 GB |
- 12 GB - 16 GB |
| Memory Type | LPDDR5X | LPDDR5 |
| Memory Frequency | 4800 MHz | 2750 MHz |
| Channels | 4 | 2 |
| Storage Capacity | - 256 GB - 512 GB - 1024 GB | - 128 GB - 256 GB - 512 GB |
| Storage Type | UFS 4.0 | UFS 3.1 |
| Memory Card | No | No |
Software
| OS | Android 14 | Android 11 (Upgradeable to Android 14) |
| OS Size | n/a | 26.4 GB |
| UI Skin | HyperOS 1.0 | One UI 6 |
Battery
| Volume | 5500 mAh | 5000 mAh |
| Max Charging Power | 120 W | 25 W |
| Battery Type | Li-Po | Li-ion |
| Removable | No | No |
| Wireless Charging | No | Yes (15 W) |
| Reverse Charging | No | Yes (Wireless) |
| Fast Charging | Yes (50% in 12 min) | Yes (54% in 30 min) |
| Full Charge Time | 0:24 h | 1:11 h |
| Web Browsing | n/a | 07:58 h |
| Video Playback | n/a | 13:59 h |
| Games | n/a | 05:14 h |
| Standby Mode | n/a | 111 h |
Main camera
| Matrix | 50 MP | 108 MP |
| Photo resolution | 8192x6144 pixels | 12000x9000 pixels |
| Zoom | Digital | Optical, 10x |
| Flash | Dual LED | Dual LED |
| Stabilization | Optical | Optical |
| 8K Recording | Yes (Up to 30 fps) | Up to 24FPS |
| 4K Recording | Yes (Up to 60 fps) | Yes (Up to 60 fps) |
| 1080p Recording | Yes (Up to 60 fps) | Yes (Up to 60 fps) |
| Slow Motion | 960 fps (1080p) | 960 fps (720p) |
| Wide-angle lens | 119 ° | 120 ° |
| Lenses count | Standard: 50 MP Ultra-wide: 8 MP Macro: 2 MP |
Standard: 108 MP Telephoto: 10 MP Telephoto: 10 MP Ultra-wide: 12 MP |
| Features | - Bokeh effect - Pro mode |
- Bokeh effect - Pro mode - RAW support |
| Matrix | 50 MP | 108 MP |
| Aperture | f/1.7 | f/1.8 |
| Focal length | 23 mm | 26 mm |
| Sensor | Sony IMX906 | Samsung S5KHM3 |
| Sensor size | 1/1.56 | 1/1.33 |
| Pixel size | 1 μm | 0.8 μm |
| Autofocus | Phase autofocus | Laser autofocus |
| Stabilization | Optical | Optical |
| Matrix | n/a | 10 MP |
| Aperture | n/a | f/4.9 |
| Focal length | n/a | 240 mm |
| Sensor | n/a | Samsung S5K3J1 |
| Sensor size | n/a | 1/2.65 |
| Pixel size | n/a | 1.22 μm |
| Stabilization | n/a | Optical |
| Matrix | 8 MP | 12 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | n/a | 13 mm |
| Sensor | Samsung S5KJN1 | Sony IMX563 |
| Sensor size | 1/4.0 | 1/2.55 |
| Pixel size | 1.12 μm | 1.4 μm |
| Stabilization | Digital | Digital |
| Bokeh | n/a | 70 |
| Preview | n/a | 67 |
| Zoom | n/a | 106 |
Front camera
| Matrix | 20 MP | 40 MP |
| Photo resolution | n/a | 7864x5200 pixels |
| Aperture | n/a | f/2.2 |
| Focal length | n/a | 26 mm |
| Sensor | Omnivision OV20B | Samsung S5KGH1 |
| Sensor size | 1/2.0 | 1/2.65 |
| Pixel size | n/a | 0.7 μm |
| Autofocus | n/a | Phase autofocus |
| Stabilization | Digital | Digital |
| Video resolution | 1080p (Full HD) at 30 fps | 2160p (4K) at 60 fps |
| TOF 3D sensor | No | No |
Connectivity
| Wi-Fi version | Wi-Fi 7 (802.11 a/b/g/n/ac/ax) | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5.4 | 5.2 |
| Bluetooth features | LE | LE, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | n/a | 3.2 |
| USB features | - Charging - USB Storage Mode - OTG |
- Charging - USB Storage Mode - USB-Host mode - OTG |
| GPS | - GPS - GLONASS - Beidou - Galileo - QZSS - NAVIC |
- GPS - GLONASS - Beidou - Galileo |
| NFC* | Yes | Yes |
| Infrared Port | Yes | No |
| SIM Count* | 2 | 2 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | No | Yes |
| Hybrid Slot | No | No |
| 2G Bands | n/a | GSM 850, 900, 1800, 1900 MHz |
| 3G Bands | n/a | WCDMA Band 1, 2, 4, 5, 8 |
| LTE Bands* | n/a | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66) |
| LTE category | n/a | 24 |
| 5G Support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| 3.5 mm Jack | No | No |
| FM Radio | n/a | No |
| Dolby Atmos | n/a | Yes |
Other
| Class | Flagship | Flagship |
| Announced | July, 2024 yr | January, 2021 yr |
| Release Date | July, 2024 yr | February, 2021 yr |
| Launch Price ($) | 360 | 1200 |
| Sensors | - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
| Charger Included | Yes 120 W | n/a |
Note
Xiaomi Redmi K70 Ultra:
Also known as Redmi K70 Extreme Edition in China.
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Xiaomi Redmi K70 Ultra the clear winner in this comparison.
Survey
Total Votes: 0
