Category Breakdown
Camera
≈ Tie
Main sensor resolution
≈ TieBattery
Redmi Note 15
Battery capacity (5,520 mAh)
WinsCharging
Redmi Note 15
Wired charging speed (45W)
WinsPerformance
Galaxy S21 Ultra 5G
AnTuTu benchmark (657,150 pts)
WinsDisplay
Galaxy S21 Ultra 5G
Screen size (6.8")
WinsWeight
Redmi Note 15
Total weight (178g)
WinsValue
Galaxy S21 Ultra 5G
Specs-per-dollar (server score) (10/10)
WinsFull Spec Comparison
| Spec | Galaxy S21 Ultra 5G | Redmi Note 15 |
|---|---|---|
Display | ||
| 6.8" | 6.77" | |
| 1,440 × 3,200 | 1,080 × 2,392 | |
| Dynamic AMOLED 2X | AMOLED | |
| 120Hz | 120Hz | |
| 1,500 nits | 3,200 nits | |
Camera | ||
| 108 MP | 108 MP | |
| Quad | Dual | |
| 10x | — | |
| Yes | Yes | |
| Fingerprint (under display, Fingerprint (under display, ultrasonic), accelerometer, barometer, compass, gyro, proximity, ultrasonic) | Fingerprint (under display, Fingerprint (under display, optical), accelerometer, compass, gyro, optical) | |
Performance | ||
| Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China | Qualcomm SM6475-AB Snapdragon 6 Gen 3 (4 nm) | |
| 657,150 | 637,266 | |
| — | 2,958 | |
| — | 861 | |
| 16 GB | 12 GB | |
| 512 GB | 512 GB | |
Battery | ||
| 5,000 mAh | 5,520 mAh | |
| 25W | 45W | |
| 15W | No | |
Build | ||
| 227g | 178g | |
| 8.9mm | 7.4mm | |
| Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame | Glass front, plastic frame, plastic back | |
| IP68 | — | |
| Upper Mid-Range | Budget | |
Who Each Phone Is Really For
If your priorities differ from the verdict above, start here.
Best overall value
Samsung Galaxy S21 Ultra 5G
Highest value score — most specs per dollar.
Budget pick
Samsung Galaxy S21 Ultra 5G
Lowest price while still competitive.
Photography
Xiaomi Redmi Note 15
Highest resolution main camera.