Redmi 4 Prime vs Xiaomi 15 Ultra
The Redmi 4 Prime (2016) runs on the Qualcomm Snapdragon 625, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $150 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 22/100 (a 63-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 4100); the main camera is 13 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 218,879); the Xiaomi 15 Ultra has NFC for contactless payments, the Redmi 4 Prime doesn't; the Redmi 4 Prime is noticeably lighter (156g vs 225g).
Redmi 4 Prime
Xiaomi 15 Ultra
- Lighter: 156g vs 225g
- Cheaper at launch: $150 vs $999
- Better portability (74/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 218879
- Better Geekbench Single: 3050 vs 189
- Better Geekbench Multi: 10200 vs 862
- Bigger battery: 6000 vs 4100 mAh
- Better main camera: 50MP vs 13MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (92/100 vs 14/100)
- Better camera (87/100 vs 10/100)
- Longer battery life (80/100 vs 35/100)
- Better display (90/100 vs 32/100)
Comparing the Redmi 4 Prime vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 63 points higher (85/100 vs 22/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 14/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 10/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 35/100). Value score: Redmi 4 Prime — 20/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (92/100 vs 14/100). In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (90/100 vs 32/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (87/100 vs 10/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (80/100 vs 35/100). In the "portability" category, the Redmi 4 Prime significantly outperforms the Xiaomi 15 Ultra (74/100 vs 29/100).
| Specification | Redmi 4 Prime | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 625 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 218879 | 3030376 | |
| Geekbench Single | 189 | 3050 | |
| Geekbench Multi | 862 | 10200 | |
| Display | 5.0" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | — | 3200x1440 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 4100 mAh | 6000 mAh | |
| Charging | — | 90W | |
| Wireless charging | — | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 3GB | 16GB | |
| Storage | 32GB | 256GB / 512GB / 1TB | |
| OS | — | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 141.3×69.6×8.9 mm | 161.3×75.3×9.4 mm | |
| Weight | 156 g | 225 g | |
| Launch price | $150 | $999 |
Redmi 4 Prime
- Main: 13MP
- Front: 5MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi 4 Prime
- 5.0" IPS LCD
- Refresh rate: 60 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi 4 Prime
- 4100 mAh
- Wireless charging: no data
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Redmi 4 Prime and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Redmi 4 Prime by 92.8% in our overall performance rating.
Launch price difference: $849. Redmi 4 Prime was $849 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (92/100 vs 14/100).
display
In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (90/100 vs 32/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (87/100 vs 10/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime (80/100 vs 35/100).
portability
In the "portability" category, the Redmi 4 Prime significantly outperforms the Xiaomi 15 Ultra (74/100 vs 29/100).
Which is better: the Redmi 4 Prime or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Redmi 4 Prime by 63 points (85/100 vs 22/100).
What is the rating of the Redmi 4 Prime and the Xiaomi 15 Ultra?
The Redmi 4 Prime has a MobileRank rating of 22/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Redmi 4 Prime or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 10/100).
Which is more powerful: the Redmi 4 Prime or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 14/100).
Should you choose the Redmi 4 Prime over the Xiaomi 15 Ultra?
The Redmi 4 Prime is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.