OnePlus Ace 6 Ultra vs Redmi Note 15 4G
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Redmi Note 15 4G (2025) runs on the MediaTek Helio G100 Ultra; estimated prices are $555 and $199. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 66/100 vs 37/100 (a 29-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 6000); the main camera is 50 MP vs 108 MP; the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 408,000); the Redmi Note 15 4G is noticeably lighter (183g vs 217g).
OnePlus Ace 6 Ultra
Redmi Note 15 4G
- Higher AnTuTu: 3429868 vs 408000
- Better Geekbench Single: 3228 vs 760
- Better Geekbench Multi: 9553 vs 1890
- Bigger battery: 8600 vs 6000 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (76/100 vs 0/100)
- Longer battery life (82/100 vs 48/100)
- Better main camera: 108MP vs 50MP
- Lighter: 183g vs 217g
- Cheaper: $199 vs $555
- Better camera (40/100 vs 31/100)
- Better design/ergonomics (71/100 vs 28/100)
- Better value for money (96/100 vs 72/100)
Comparing the OnePlus Ace 6 Ultra vs the Redmi Note 15 4G, the OnePlus Ace 6 Ultra scores 29 points higher (66/100 vs 37/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (76/100 vs 0/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 48/100). In the "value for money" category, the Redmi Note 15 4G leads (96/100 vs 72/100). In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi Note 15 4G (76/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi Note 15 4G is a bit better (40/100 vs 31/100). In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi Note 15 4G (82/100 vs 48/100). In the "design" category, the Redmi Note 15 4G significantly outperforms the OnePlus Ace 6 Ultra (71/100 vs 28/100). In the "value for money" category, the Redmi Note 15 4G notably outperforms the OnePlus Ace 6 Ultra (96/100 vs 72/100).
| Specification | OnePlus Ace 6 Ultra | Redmi Note 15 4G | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | MediaTek Helio G100 Ultra | |
| AnTuTu | 3429868 | 408000 | |
| Geekbench Single | 3228 | 760 | |
| Geekbench Multi | 9553 | 1890 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2772 | 1080x2392 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 6000 mAh | |
| Charging | 120W | 33W | |
| Main camera | 50 MP | 108 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB / 512GB | |
| OS | Android 16 | Android 15, up to 4 major Android upgrades, HyperOS 2 | |
| Brightness (peak) | 1800 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP64 | |
| Dimensions | 162.5×77.5×8.5 mm | 164.0×75.4×7.9 mm | |
| Weight | 217 g | 183 g | |
| Price | $555 | $199 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi Note 15 4G
- Main: 108MP f/f/1.7
- Front: 20MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Redmi Note 15 4G
- 6.8" AMOLED
- Resolution: 1080x2392
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Redmi Note 15 4G
- 6000 mAh
- Wired: 33W
- No wireless charging
We compared OnePlus Ace 6 Ultra and Redmi Note 15 4G, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Redmi Note 15 4G by 740.7% in our overall performance rating.
Price difference: $356. Redmi Note 15 4G is cheaper by $356.
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi Note 15 4G (76/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Redmi Note 15 4G is a bit better (40/100 vs 31/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi Note 15 4G (82/100 vs 48/100).
design
In the "design" category, the Redmi Note 15 4G significantly outperforms the OnePlus Ace 6 Ultra (71/100 vs 28/100).
value for money
In the "value for money" category, the Redmi Note 15 4G notably outperforms the OnePlus Ace 6 Ultra (96/100 vs 72/100).
Which is better: the OnePlus Ace 6 Ultra or the Redmi Note 15 4G?
The OnePlus Ace 6 Ultra significantly outperforms the Redmi Note 15 4G by 29 points (66/100 vs 37/100).
What is the rating of the OnePlus Ace 6 Ultra and the Redmi Note 15 4G?
The OnePlus Ace 6 Ultra has a MobileRank rating of 66/100, the Redmi Note 15 4G — 37/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Redmi Note 15 4G?
The Redmi Note 15 4G leads on camera score (40/100 vs 31/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Redmi Note 15 4G?
The OnePlus Ace 6 Ultra leads on performance (76/100 vs 0/100).
Should you choose the OnePlus Ace 6 Ultra over the Redmi Note 15 4G?
The OnePlus Ace 6 Ultra is a better fit for active users, those who care about battery life. The Redmi Note 15 4G is a better fit for budget-conscious buyers.