Compare Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra 16/512GB
| Name | Samsung Galaxy S25 Ultra | Samsung Galaxy S21 Ultra 16/512GB |
|---|---|---|
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|
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| Antutu benchmark | 3085733 | 647553 |
| CPU | Qualcomm Snapdragon 8 Elite (Gen 4) | Samsung Exynos 2100 |
| Diagonal size | 6.9 " | 6.8 " |
| Resolution | 3120x1440 | 3200x1440 |
| Multi-touch (number of touches) | 10 | 10 |
| RAM | 12 Gb | 16 Gb |
| Bezel-less | Yes | Yes |
| ROM | 256 GB | 512 GB |
| External memory | No | No |
| Rear camera | 200 Mp | 108 Mp |
| Camera | Four cameras | Five cameras |
| Sensor model | Samsung ISOCELL HP2 | Samsung S5KHM3 |
| dxomark mobile ranking | ||
| dxomark (photo) | ||
| dxomark (video) | ||
| Front (selfie) camera | 12 Mp | 40 Mp |
| Battery | 5000 mAh | 5000 mAh |
| Wireless charging | Yes | Yes |
| Network | 5 G | 5 G |
| WiFi | Yes | Yes |
| Bluetooth | Yes | Yes |
| NFC | Yes | Yes |
| Navigation (Positioning) | GPS, A-GPS, GLONAS | GPS, A-GPS, GLONAS |
| Notifications Led | No | No |
| Fingerprint's scanner | Yes | Yes |
| Operating system (OS) | Android 15 | Android 11 |
| Material | Metal frame and glass case | Metal frame and glass case |
| Weight | 218 g | 228 g |
| Dimensions | 162.8 x 77.6 x 8.2 mm | 165,1 x 75,6 x 8,8 mm |
| Price |
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Alternatives to the Samsung Galaxy S25 Ultra: Samsung Galaxy A33 5G 6/128GB - Compare Samsung Galaxy M31S - Compare Samsung Galaxy S22 - Compare |
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Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra 16/512GB: Camera comparison.
In this table, you can compare the Samsung Galaxy S25 Ultra’s camera vs Samsung Galaxy S21 Ultra’s camera, see the difference between the 200Mp Samsung ISOCELL HP2 sensor and the 108Mp Samsung S5KHM3 sensor, and understand which camera has the maximum benefits compared to the competitor.
| Name | Samsung Galaxy S25 Ultra | Samsung Galaxy S21 Ultra 16/512GB |
|---|---|---|
| Rear camera | 200 Mp | 108 Mp |
| Sensor model | Samsung ISOCELL HP2 | Samsung S5KHM3 |
| Flash | Dual LED flash | Dual LED flash |
| Front (selfie) camera | 12 Mp | 40 Mp |
| Flash | No | No |
Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra 16/512GB: battery life comparison.
Below, you can find the last battery life test between the Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra, compare the difference between their batteries when in performance or normal mode, and see what chargers they support.
| Name | Samsung Galaxy S25 Ultra | Samsung Galaxy S21 Ultra 16/512GB |
|---|---|---|
| Battery | 5000 mAh | 5000 mAh |
| Type | Non-removable | Non-removable |
| Stand-by time | 6-7 days | 6-7 days |
| Battery Life | 2-3 days | 3-4 days |
| Working hours in hard mode | 8-9 hours | 8-9 hours |
| Talk time | 30 hours | 30 hours |
| Fast charging | Yes | Yes |
| Wireless charging | Yes | Yes |
Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra 16/512GB: Antutu benchmark comparison.
Samsung Galaxy S25 Ultra in the AnTuTu benchmark test got 3085733 score points which is 376.52% faster than the Samsung Galaxy S21 Ultra 16/512GB, which got 647553. You can compare its ranking and performance with other models results based on the Antutu test below.
Samsung Galaxy S25 Ultra vs Samsung Galaxy S21 Ultra 16/512GB: Geekbench benchmark comparison.
Samsung Galaxy S25 Ultra in the Geekbench benchmark tests got a 3218 points score in "Single-core" of against the Samsung Galaxy S21 Ultra 16/512GB which got 1096, it is 193.61% faster. In "Multi-core" score 10166 vs 3723 (173.06% faster). You can compare its ranking and performance with other models results based on the Geekbench test below.
What is the difference between Samsung Galaxy S25 Ultra and Samsung Galaxy S21 Ultra 16/512GB? (compare specs) (which is better)
The main differences, why it is better to choose the Samsung Galaxy S25 Ultra (advantages)
- Good performance: Is 376.52% faster in the Antutu test (2438180 score difference).
- Best weight: 10 grams less (218 vs 228).
- Has a higher resolution newer rear camera: 200Mp Samsung ISOCELL HP2 compared to 108Mp Samsung S5KHM3
Why it is better not to take Samsung Galaxy S25 Ultra (disadvantages)
The main differences, why it is better to choose the Samsung Galaxy S21 Ultra 16/512GB (advantages)
- Has a higher resolution front (selfie) camera: 40Mp vs 12Mp .
- Has a higher screen resolution: 3200x1440 vs 3120x1440.
Why it is better not to take Samsung Galaxy S21 Ultra 16/512GB (disadvantages)
The advantages of both models
- NFC supports.
- Have water resistant supports.
- Have wireless charging supports.
- Have fast charging supports.
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Samsung Galaxy S21 Ultra 16/512GB related comparisons
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