Samsung Galaxy S21 Ultra vs Samsung Galaxy S25 FE
67
out 100
VS
80
out 100
Compared 2 smartphones : Samsung Galaxy S21 Ultra Manufactured in February, 2021, with display 6.8 with chipsetSamsung Exynos 2100, vs Samsung Galaxy S25 FE, Manufactured in September, 2025 with chipsetSamsung Exynos 2400. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Samsung Galaxy S21 Ultra
- Larger display: 6.8in
- Higher pixel density: 515ppi
- Higher battery capacity: 5000mAh vs 4900mAh
Reasons to choose Samsung Galaxy S25 FE
- Lighter design: 190g vs 227g
- Newer Bluetooth version: 5.4 vs 5.2
- Supports DisplayPort
Versions
| Memory Options | - 12/128 GB - 12/256 GB - 12/512 GB - 16/256 GB - 16/512 GB |
- 8/128 GB - 8/256 GB - 8/512 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 | Dynamic AMOLED |
| Size | 6.8 in | 6.7 in |
| Resolution | 1440x3200 pixels | 1080x2340 pixels |
| Aspect ratio | 20:9 | 19.5:9 |
| Pixel density | 515 ppi | 385 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (10-120 Hz) | Yes (60-120 Hz) |
| Max brightness | 1500 nits | 1300 nits |
| HDR support | Yes HDR10+ | Yes, HDR10+ |
| Screen-to-body ratio | 89.5 % | 89.2 % |
| Features | - DCI-P3 - Always-On Display |
- DCI-P3 - Always-On Display |
Design & Build
| Height | 165.1 mm (6.5 in) | 161.3 mm (6.35 in) |
| Width | 75.6 mm (2.98 in) | 76.6 mm (3.02 in) |
| Thickness | 8.9 mm (0.35 in) | 7.4 mm (0.29 in) |
| Weight | 227 g (8.01 oz) | 190 g (6.7 oz) |
| Water resistance | IP68 | IP68 |
| Cooling system | n/a | Vapor chamber |
| Back panel | Glass | Glass |
| Frame | Metal | Metal |
| Colors | - Black - Silver - Gray - Blue |
- White - Black - Gray - Blue - Yellow |
| Fingerprint sensor | Yes In-Display | Yes, In-Display |
Screen-to-body ratio
Performance
| Chipset | Samsung Exynos 2100 | Samsung Exynos 2400 |
| Max Frequency | 2900 MHz | 3200 MHz |
| CPU Cores | 8 (1 + 3 + 4) | 10 (1 + 2 + 3 + 4) |
| Architecture | - 4/2.2 (Cortex-A55) - 3/2.81 (Cortex-A78) - 1/2.91 (Cortex-X1) |
- 4/1.95 (Cortex-A520) - 3/2.6 (Cortex-A720) - 2/2.9 (Cortex-A720) - 1/3.21 (Cortex-X4) |
| Process | Samsung | Samsung |
| Transistor Size | 5 nm | 4 nm |
| Neural Processor | Yes | Yes |
| Graphics | Mali-G78 MP14 | Samsung Xclipse 940 |
| GPU Cores | 896 | 768 |
| GPU Frequency | 854 MHz | 1095 MHz |
| FLOPS | 1530.4 GFLOPS | 3406.8 GFLOPS |
| Geekbench 6 (Single-Core) | 1449 | 2116 |
| Geekbench 6 (Multi-Core) | 3892 | 7035 |
| Geekbench Compute (GPU) | n/a | 18270 |
| CPU | 232358 | 429356 |
| GPU | 256356 | 715844 |
| Memory | 163007 | 352083 |
| UX | 191217 | 303719 |
| NanoReview Score | 843008 | 1801002 |
| 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 16 |
| OS Size | 26.4 GB | 23.8 GB |
| UI Skin | One UI 6 | One UI 8.0 |
Battery
| Volume | 5000 mAh | 4900 mAh |
| Max Charging Power | 25 W | 45 W |
| Battery Type | Li-ion | Li-ion |
| Removable | No | No |
| Wireless Charging | Yes (15 W) | Yes (25 W) |
| Reverse Charging | Yes (Wireless) | Yes, (Wireless) |
| Fast Charging | Yes (54% in 30 min) | Yes (65% in 30 min) |
| Full Charge Time | 1:11 h | n/a |
| 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 | 8160x6120 pixels |
| Zoom | Optical, 10x | Optical, 3x |
| Flash | Dual LED | LED |
| Stabilization | Optical | Optical |
| 8K Recording | Up to 24FPS | Yes (Up to 30 fps) |
| 4K Recording | Yes (Up to 60 fps) | Yes (Up to 120 fps) |
| 1080p Recording | Yes (Up to 60 fps) | Yes (Up to 120 fps) |
| Slow Motion | 960 fps (720p) | 960 fps (720p) |
| Wide-angle lens | 120 ° | 123 ° |
| Lenses count | Standard: 108 MP Telephoto: 10 MP Telephoto: 10 MP Ultra-wide: 12 MP |
Standard: 50 MP Telephoto: 8 MP Ultra-wide: 12 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 | n/a |
| Sensor size | 1/1.33 | 1/1.57 |
| Pixel size | 0.8 μm | 1 μm |
| Autofocus | Laser autofocus | Phase autofocus (Dual Pixel) |
| Stabilization | Optical | Optical |
| Matrix | 10 MP | 8 MP |
| Aperture | f/4.9 | f/2.4 |
| Focal length | 240 mm | 75 mm |
| Sensor | Samsung S5K3J1 | n/a |
| Sensor size | 1/2.65 | 1/4.4 |
| Pixel size | 1.22 μm | 1 μm |
| Stabilization | Optical | Optical |
| Matrix | 12 MP | 12 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 13 mm | 13 mm |
| Sensor | Sony IMX563 | n/a |
| Sensor size | 1/2.55 | 1/3.0 |
| 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 | 12 MP |
| Photo resolution | 7864x5200 pixels | n/a |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 26 mm | 26 mm |
| Sensor | Samsung S5KGH1 | CMOS |
| Sensor size | 1/2.65 | 1/3.2 |
| Pixel size | 0.7 μm | 1.12 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 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 | 5.2 | 5.4 |
| Bluetooth features | LE, A2DP | LE |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 3.2 |
| USB features | - Charging - USB Storage Mode - USB-Host mode - OTG |
- Charging - USB Storage Mode - OTG |
| DisplayPort | n/a | Yes |
| GPS | - GPS - GLONASS - Beidou - Galileo |
- GPS - GLONASS - Beidou - Galileo - QZSS - NAVIC |
| NFC* | Yes | Yes |
| Infrared Port | No | No |
| SIM Count* | 2 | 1 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | Yes | Yes |
| Hybrid Slot | No | No |
| 2G Bands | GSM 850, 900, 1800, 1900 MHz | GSM850, GSM900, DCS1800, PCS1900 |
| 3G Bands | WCDMA Band 1, 2, 4, 5, 8 | UMTS B1(2100), B2(1900), B4(AWS), B5(850), B8(900) |
| 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/B17/B18/B19/B20/B25/B26/B28/B32/B66) |
| LTE category | 24 | 20 |
| 5G Support | Yes | Yes |
Sound
| Speakers | Stereo | n/a |
| 3.5 mm Jack | No | No |
| FM Radio | No | No |
| Dolby Atmos | Yes | Yes |
Other
| Class | Flagship | Flagship |
| Announced | January, 2021 yr | September, 2025 yr |
| Release Date | February, 2021 yr | September, 2025 yr |
| Launch Price ($) | 1200 | n/a |
| MSRP ($) | n/a | 649 |
| Sensors | - Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
| Charger Included | n/a | No |
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Samsung Galaxy S25 FE the clear winner in this comparison.
Survey
Total Votes: 3
