Samsung Galaxy S25 Ultra vs Samsung Galaxy A21s
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Compared 2 smartphones : Samsung Galaxy S25 Ultra Manufactured in February, 2025, with display 6.9 with chipsetQualcomm Snapdragon 8 Elite, vs Samsung Galaxy A21s, Manufactured in June, 2020 with chipsetSamsung Exynos 850. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Samsung Galaxy S25 Ultra
- Larger display: 6.9in
- Higher pixel density: 498ppi
- Higher refresh rate: 120Hz
- Newer Bluetooth version: 5.4 vs 5
- Supports newer USB: 3.2 vs 2
- Supports DisplayPort
- Built-in eSIM
Reasons to choose Samsung Galaxy A21s
- Lighter design: 192g vs 218g
Versions
| Memory Options | - 12/256 GB - 12/512 GB - 12/1024 GB - 16/1024 GB |
- 2/32 GB - 3/32 GB - 3/64 GB - 3/128 GB - 4/32 GB - 4/64 GB - 4/128 GB - 6/64 GB - 6/128 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 | PLS TFT |
| Size | 6.9 in | 6.5 in |
| Resolution | 1440x3120 pixels | 720x1600 pixels |
| Aspect ratio | 19.5:9 | 20:9 |
| Pixel density | 498 ppi | 270 ppi |
| Refresh rate | 120 Hz | 60 Hz |
| Adaptive refresh rate | Yes (1-120 Hz) | No |
| Max brightness | 2600 nits | 540 nits |
| HDR support | Yes HDR10+ | No |
| Touch Sampling Rate | 240 Hz | n/a |
| Screen-to-body ratio | 92.4 % | 82.9 % |
| Features | - DCI-P3 - Always-On Display - DC dimming |
n/a |
| sRGB gamut | 97.7 % | 88.4 % |
| PWM (Flicker) | 240 Hz | 500 Hz |
| Response time | 1 ms | 30.4 ms |
| Contrast | ∞ Infinite | 1500:1 |
Design & Build
| Height | 162.8 mm (6.41 in) | 163.6 mm (6.44 in) |
| Width | 77.6 mm (3.06 in) | 75.3 mm (2.96 in) |
| Thickness | 8.2 mm (0.32 in) | 8.9 mm (0.35 in) |
| Weight | 218 g (7.69 oz) | 192 g (6.77 oz) |
| Water resistance | IP68 | No |
| Cooling system | Vapor chamber | n/a |
| Back panel | Glass | Plastic |
| Frame | Metal | Plastic |
| Colors | - Black - Silver - Gray - Blue |
- Black - Blue - Red |
| Fingerprint sensor | Yes In-Display | Yes rear |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite | Samsung Exynos 850 |
| Max Frequency | 4470 MHz | 2000 MHz |
| CPU Cores | 8 (2 + 6) | 8 (8) |
| Architecture | - 6/3.53 (Oryon (Phoenix M)) - 2/4.32 (Oryon (Phoenix L)) |
8/2 (Cortex-A55) |
| Process | TSMC | Samsung |
| Transistor Size | 3 nm | 8 nm |
| Neural Processor | Hexagon | No |
| Graphics | Adreno 830 | Mali-G52 MP1 |
| GPU Cores | 1536 | 24 |
| GPU Frequency | 1100 MHz | 850 MHz |
| FLOPS | 3379.2 GFLOPS | 40.8 GFLOPS |
| Geekbench 6 (Single-Core) | 3147 | 484 |
| Geekbench 6 (Multi-Core) | 9750 | 1523 |
| Geekbench Compute (GPU) | 25681 | n/a |
| CPU | 659871 | 68748 |
| GPU | 1294167 | 26807 |
| Memory | 471319 | 59210 |
| UX | 369782 | 36610 |
| NanoReview Score | 2795139 | 191375 |
| Max Surface Temp. | n/a | 43.2 °C |
| Stability | n/a | 98 % |
| Graphics Test | n/a | 2 fps |
| Graphics Score | n/a | 425 |
| Writing score | n/a | 5426 |
| Web score | n/a | 4708 |
| Video editing | n/a | 5145 |
| Data manipulation | n/a | 3808 |
| NanoReview Score | n/a | 5429 |
Memory
| RAM Size | - 12 GB - 16 GB |
- 3 GB - 4 GB |
| Memory Type | LPDDR5X | LPDDR4X |
| Memory Frequency | 5333 MHz | 1866 MHz |
| Channels | 2 | 2 |
| Storage Capacity | - 256 GB - 512 GB - 1024 GB | - 32 GB - 64 GB |
| Storage Type | UFS 4.0 | eMMC 5.1 |
| Memory Card | No | MicroSD |
Software
| OS | Android 15 | Android 10 (Upgradeable to Android 12) |
| OS Size | 30.4 GB | 12 GB |
| UI Skin | One UI 7.0 | One UI 4.1 |
Battery
| Volume | 5000 mAh | 5000 mAh |
| Max Charging Power | 45 W | 15 W |
| Battery Type | Li-ion | Li-Po |
| Removable | No | No |
| Wireless Charging | Yes (25 W) | No |
| Reverse Charging | Yes (Wireless) | No |
| Fast Charging | Yes (72% in 30 min) | Yes (50% in 60 min) |
| Full Charge Time | 0:59 h | 2:10 h |
| Web Browsing | 11:10 h | 09:45 h |
| Video Playback | 19:32 h | 14:13 h |
| Games | 06:22 h | 05:34 h |
| Standby Mode | 160 h | 128 h |
Main camera
| Matrix | 200 MP | 48 MP |
| Photo resolution | 16320x12240 pixels | 8000x6000 pixels |
| Zoom | Optical, 5x | Digital |
| Flash | LED | LED |
| Stabilization | Optical | Digital |
| 8K Recording | Yes (Up to 30 fps) | No |
| 4K Recording | Yes (Up to 120 fps) | No |
| 1080p Recording | Yes (Up to 240 fps) | Yes (Up to 30 fps) |
| Slow Motion | 240 fps (1080p) | No |
| Wide-angle lens | 120 ° | 123 ° |
| Lenses count | Standard: 200 MP Telephoto: 50 MP Telephoto: 12 MP Ultra-wide: 50 MP |
Standard: 48 MP Ultra-wide: 8 MP Macro: 2 MP Depth: 2 MP |
| Features | - Bokeh effect - Pro mode - RAW support |
Bokeh effect |
| Matrix | 200 MP | 48 MP |
| Aperture | f/1.7 | f/2.0 |
| Focal length | 23 mm | 26 mm |
| Sensor | Samsung ISOCELL S5KHP2 | Samsung S5KGM2 |
| Sensor size | 1/1.3 | 1/2.0 |
| Pixel size | 0.6 μm | 0.8 μm |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Optical | Digital |
| Matrix | 50 MP | n/a |
| Aperture | f/3.4 | n/a |
| Focal length | 111 mm | n/a |
| Sensor | Sony IMX854 | n/a |
| Sensor size | 1/2.52 | n/a |
| Pixel size | 0.7 μm | n/a |
| Stabilization | Optical | n/a |
| Matrix | 50 MP | 8 MP |
| Aperture | f/1.9 | f/2.2 |
| Focal length | 13 mm | n/a |
| Sensor | Samsung ISOCELL S5KJN3 | n/a |
| Sensor size | 1/2.5 | 1/4.0 |
| Pixel size | 0.7 μm | 1.12 μm |
| Stabilization | Digital | Digital |
| Bokeh | 70 | n/a |
| Preview | 81 | n/a |
| Zoom | 149 | n/a |
Front camera
| Matrix | 12 MP | 13 MP |
| Photo resolution | 4000x3000 pixels | 4128x3096 pixels |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 26 mm | n/a |
| Sensor | Samsung S5K3LU | CMOS |
| Sensor size | 1/3.2 | 1/3.1 |
| Pixel size | 1.12 μm | 1.12 μm |
| Autofocus | Phase autofocus (Dual Pixel) | No |
| Stabilization | Digital | Digital |
| Video resolution | 2160p (4K) at 60 fps | 1080p (Full HD) at 30 fps |
| TOF 3D sensor | No | No |
Connectivity
| Wi-Fi version | Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) | Wi-Fi 5 (802.11 a/b/g/n/ac) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5.4 | 5 |
| Bluetooth features | LE | PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 2 |
| USB features | - Charging - USB Storage Mode - OTG |
- Charging - USB Storage Mode - OTG |
| DisplayPort | Yes DP 1.2 | n/a |
| GPS | - GPS - GLONASS - Beidou - Galileo - QZSS |
- GPS - GLONASS - Beidou - Galileo |
| NFC* | Yes | Yes |
| Infrared Port | No | No |
| SIM Count* | 1 | 2 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | Yes | No |
| Hybrid Slot | No | No |
| 2G Bands | GSM850, GSM900, DCS1800, PCS1900 | GSM850, GSM900, DCS1800, PCS1900 |
| 3G Bands | UMTS B1(2100),B2(1900),B4(AWS),B5(850),B8(900) | B1 (2100), B2 (1900), B5(850), B8 (900) |
| LTE Bands* | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B29/B30/B66/B71) | LTE (B1/B2/B3/B5/B7/B8/B20/B28) |
| LTE category | n/a | 13 |
| 5G Support | Yes | No |
Sound
| Speakers | Stereo | Mono |
| 3.5 mm Jack | No | Yes |
| FM Radio | No | Yes |
| Dolby Atmos | Yes | Yes |
Other
| Class | Flagship | Budget |
| Announced | January, 2025 yr | May, 2020 yr |
| Release Date | February, 2025 yr | June, 2020 yr |
| Launch Price ($) | 1299 | 200 |
| Sensors | - Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Hall Sensor - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
| Charger Included | No | n/a |
Note
Samsung Galaxy S25 Ultra:
Supports up to 2 eSIMs. The international model has 2 physical SIM slots, while the U.S. version has 1.","Uses Grade 5 titanium and Corning Gorilla Armor 2 glass on both sides.
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Samsung Galaxy S25 Ultra the clear winner in this comparison.
Survey
Total Votes: 0
