Samsung Galaxy S21 Ultra vs Realme GT 7T
67
out 100
VS
81
out 100
Compared 2 smartphones : Samsung Galaxy S21 Ultra Manufactured in February, 2021, with display 6.8 with chipsetSamsung Exynos 2100, vs Realme GT 7T, Manufactured in May, 2025with chipsetMediaTek Dimensity 8400 Max. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Samsung Galaxy S21 Ultra
- Higher pixel density: 515ppi
- Supports newer USB: 3.2 vs 2
- Supports Dolby Atmos
- Built-in eSIM
Reasons to choose Realme GT 7T
- Lighter design: 202g vs 227g
- Higher battery capacity: 7000mAh vs 5000mAh
- Newer Bluetooth version: 6.0 vs 5.2
- Infrared port
- Includes charger
Versions
| Memory Options | - 12/128 GB - 12/256 GB - 12/512 GB - 16/256 GB - 16/512 GB |
- 8/128 GB - 8/256 GB - 12/256 GB - 12/512 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 | Dynamic AMOLED | AMOLED |
| Size | 6.8 in | 6.8 in |
| Resolution | 1440x3200 pixels | 1280x2800 pixels |
| Aspect ratio | 20:9 | 20:9 |
| Pixel density | 515 ppi | 453 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (10-120 Hz) | Yes |
| Max brightness | 1500 nits | 1800 nits |
| HDR support | Yes HDR10+ | Yes Dolby Vision |
| Touch Sampling Rate | n/a | 360 Hz |
| Screen-to-body ratio | 89.5 % | 90.5 % |
| Features | - DCI-P3 - Always-On Display |
- DCI-P3 - Always-On Display - DC dimming |
Design & Build
| Height | 165.1 mm (6.5 in) | 162.42 mm (6.39 in) |
| Width | 75.6 mm (2.98 in) | 75.97 mm (2.99 in) |
| Thickness | 8.9 mm (0.35 in) | 8.25 mm (0.32 in) |
| Weight | 227 g (8.01 oz) | 202 g (7.13 oz) |
| Water resistance | IP68 | IP69 |
| Cooling system | n/a | Vapor chamber |
| Back panel | Glass | n/a |
| Frame | Metal | Metal |
| Colors | - Black - Silver - Gray - Blue |
- Black - Blue - Yellow |
| Fingerprint sensor | Yes In-Display | Yes In-Display |
Screen-to-body ratio
Performance
| Chipset | Samsung Exynos 2100 | MediaTek Dimensity 8400 Max |
| Max Frequency | 2900 MHz | 3250 MHz |
| CPU Cores | 8 (1 + 3 + 4) | 8 (1 + 3 + 4) |
| Architecture | - 4/2.2 (Cortex-A55) - 3/2.81 (Cortex-A78) - 1/2.91 (Cortex-X1) |
- 4/2.1 (Cortex-A725) - 3/3 (Cortex-A725) - 1/3.25 (Cortex-A725) |
| Process | Samsung | TSMC |
| Transistor Size | 5 nm | 4 nm |
| Neural Processor | Yes | MediaTek NPU 880 |
| Graphics | Mali-G78 MP14 | Mali-G720 MP7 |
| GPU Cores | 896 | 896 |
| GPU Frequency | 854 MHz | 1300 MHz |
| FLOPS | 1530.4 GFLOPS | 2329.6 GFLOPS |
| Geekbench 6 (Single-Core) | 1449 | 1510 |
| Geekbench 6 (Multi-Core) | 3892 | 6042 |
| CPU | 232358 | 385772 |
| GPU | 256356 | 593285 |
| Memory | 163007 | 375886 |
| UX | 191217 | 317312 |
| NanoReview Score | 843008 | 1672255 |
| Max Surface Temp. | 40.8 °C | n/a |
| Stability | 69 % | n/a |
| Graphics Test | 31 fps | n/a |
| Graphics Score | 5221 | n/a |
Memory
| RAM Size | - 12 GB - 16 GB |
8 GB |
| Memory Type | LPDDR5 | LPDDR5X |
| Memory Frequency | 2750 MHz | n/a |
| Channels | 2 | 4 |
| Storage Capacity | - 128 GB - 256 GB - 512 GB | 128 GB |
| Storage Type | UFS 3.1 | UFS 4.0 |
| Memory Card | No | No |
Software
| OS | Android 11 (Upgradeable to Android 14) | Android 15 |
| OS Size | 26.4 GB | n/a |
| UI Skin | One UI 6 | Realme UI 6.0 |
Battery
| Volume | 5000 mAh | 7000 mAh |
| Max Charging Power | 25 W | 120 W |
| Battery Type | Li-ion | Silicon Carbon (Si/C) |
| Removable | No | No |
| Wireless Charging | Yes (15 W) | No |
| Reverse Charging | Yes (Wireless) | n/a |
| Fast Charging | Yes (54% in 30 min) | Yes (56% in 15 min) |
| Full Charge Time | 1:11 h | 0:37 h |
| Web Browsing | 07:58 h | n/a |
| Video Playback | 13:59 h | n/a |
| Games | 05:14 h | n/a |
| Standby Mode | 111 h | n/a |
Main camera
| Matrix | 108 MP | 50 MP |
| Photo resolution | 12000x9000 pixels | 8192x6144 pixels |
| Zoom | Optical, 10x | Digital |
| Flash | Dual LED | LED |
| Stabilization | Optical | Optical |
| 8K Recording | Up to 24FPS | No |
| 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 (720p) | 120 fps (1080p) |
| Wide-angle lens | 120 ° | 112 ° |
| Lenses count | Standard: 108 MP Telephoto: 10 MP Telephoto: 10 MP Ultra-wide: 12 MP |
Standard: 50 MP Ultra-wide: 8 MP |
| Features | - Bokeh effect - Pro mode - RAW support |
- Bokeh effect - Pro mode |
| Matrix | 108 MP | 50 MP |
| Aperture | f/1.8 | f/1.8 |
| Focal length | 26 mm | 24 mm |
| Sensor | Samsung S5KHM3 | Sony IMX896 |
| Sensor size | 1/1.33 | 1/1.56 |
| Pixel size | 0.8 μm | 1 μm |
| Autofocus | Laser autofocus | Phase autofocus |
| Stabilization | Optical | Optical |
| Matrix | 10 MP | n/a |
| Aperture | f/4.9 | n/a |
| Focal length | 240 mm | n/a |
| Sensor | Samsung S5K3J1 | n/a |
| Sensor size | 1/2.65 | n/a |
| Pixel size | 1.22 μm | n/a |
| Stabilization | Optical | n/a |
| Matrix | 12 MP | 8 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 13 mm | 16 mm |
| Sensor | Sony IMX563 | Omnivision OV08D10 |
| Sensor size | 1/2.55 | 1/4.0 |
| Pixel size | 1.4 μm | 1.12 μm |
| Stabilization | Digital | Digital |
| Bokeh | 70 | n/a |
| Preview | 67 | n/a |
| Zoom | 106 | n/a |
Front camera
| Matrix | 40 MP | 32 MP |
| Photo resolution | 7864x5200 pixels | n/a |
| Aperture | f/2.2 | f/2.5 |
| Focal length | 26 mm | 21 mm |
| Sensor | Samsung S5KGH1 | Sony IMX615 |
| Sensor size | 1/2.65 | 1/2.74 |
| Pixel size | 0.7 μm | 0.8 μm |
| Autofocus | Phase autofocus | No |
| Stabilization | Digital | Digital |
| Video resolution | 2160p (4K) at 60 fps | 2160p (4K) at 60 fps |
| TOF 3D sensor | No | No |
Connectivity
| Wi-Fi version | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) | Wi-Fi 6 (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 | 5.2 | 6.0 |
| Bluetooth features | LE, A2DP | LE |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 2 |
| USB features | - Charging - USB Storage Mode - USB-Host mode - OTG |
- Charging - USB Storage Mode - OTG |
| DisplayPort | n/a | No |
| GPS | - GPS - GLONASS - Beidou - Galileo |
- GPS - GLONASS - Galileo - QZSS |
| NFC* | Yes | Yes |
| Infrared Port | No | Yes |
| SIM Count* | 2 | 2 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | Yes | No |
| Hybrid Slot | No | No |
| 2G Bands | GSM 850, 900, 1800, 1900 MHz | GSM 850/900/1800/1900MHz |
| 3G Bands | WCDMA Band 1, 2, 4, 5, 8 | WCDMA 1/2/4/5/6/8/19 |
| LTE Bands* | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66) | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B38/B39/B40/B41/B66/B71) |
| LTE category | 24 | n/a |
| 5G Support | Yes | Yes |
Sound
| Speakers | Stereo | n/a |
| 3.5 mm Jack | No | No |
| FM Radio | No | No |
| Dolby Atmos | Yes | n/a |
Other
| Class | Flagship | Mid-range |
| Announced | January, 2021 yr | May, 2025 yr |
| Release Date | February, 2021 yr | May, 2025 yr |
| Launch Price ($) | 1200 | n/a |
| MSRP ($) | n/a | 549 |
| Sensors | - Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
| Charger Included | n/a | Yes 120 W |
Note
Realme GT 7T:
The 128GB version uses UFS 3.1 storage.
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Realme GT 7T the clear winner in this comparison.
Survey
Total Votes: 0
