Motorola Signature vs Xiaomi 15 Ultra
The Motorola Signature (2026) runs on the Qualcomm Snapdragon 8 Gen 5, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $699 and $999. By overall MobileRank rating, the Motorola Signature leads — 86/100 vs 85/100 (a 1-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5200); the Motorola Signature is faster in AnTuTu (3,057,215 vs 3,030,376); per DXOMark lab testing, the Motorola Signature has the stronger camera (164 vs 159); the Motorola Signature is noticeably lighter (186g vs 225g).
Profile comparison
Category scores
Motorola Signature
Xiaomi 15 Ultra
What makes Motorola Signature better?
- Higher AnTuTu: 3057215 vs 3030376
- Lighter: 186g vs 225g
- Cheaper at launch: $699 vs $999
- Better camera (91/100 vs 87/100)
- Better portability (78/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Better Geekbench Single: 3050 vs 2833
- Better Geekbench Multi: 10200 vs 9119
- Bigger battery: 6000 vs 5200 mAh
- Higher performance (92/100 vs 90/100)
- Longer battery life (80/100 vs 77/100)
- Better display (90/100 vs 84/100)
Comparison verdict
Comparing the Motorola Signature vs the Xiaomi 15 Ultra, the Motorola Signature scores 1 points higher (86/100 vs 85/100). Value score: Motorola Signature — 86/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Xiaomi 15 Ultra and the Motorola Signature are nearly equal (92/100 vs 90/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100). In the "camera" category, the Motorola Signature and the Xiaomi 15 Ultra are nearly equal (91/100 vs 87/100). In the "battery" category, the Xiaomi 15 Ultra and the Motorola Signature are nearly equal (80/100 vs 77/100). In the "portability" category, the Motorola Signature significantly outperforms the Xiaomi 15 Ultra (78/100 vs 29/100).
Specs comparison
| Specification | Motorola Signature | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3057215 | 3030376 | |
| Geekbench Single | 2833 | 3050 | |
| Geekbench Multi | 9119 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1264x2780 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5200 mAh | 6000 mAh | |
| Charging | 90W | 90W | |
| Wireless charging | 50W | 50W | |
| DXOMark (camera) | 164 | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 6200 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 162.1×76.4×7.0 mm | 161.3×75.3×9.4 mm | |
| Weight | 186 g | 225 g | |
| Launch price | $699 | $999 |
Camera comparison
Motorola Signature
- Main: 50MP f/1.8
- Ultrawide: 13MP
- Telephoto: 50MP
- Front: 32MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Motorola Signature
- 6.8" AMOLED
- Resolution: 1264x2780
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Motorola Signature
- 5200 mAh
- Wired: 90W
- Wireless: 50W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Motorola Signature and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Motorola Signature leads Xiaomi 15 Ultra by 0.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $300. Motorola Signature was $300 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra and the Motorola Signature are nearly equal (92/100 vs 90/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100).
camera
In the "camera" category, the Motorola Signature and the Xiaomi 15 Ultra are nearly equal (91/100 vs 87/100).
battery
In the "battery" category, the Xiaomi 15 Ultra and the Motorola Signature are nearly equal (80/100 vs 77/100).
portability
In the "portability" category, the Motorola Signature significantly outperforms the Xiaomi 15 Ultra (78/100 vs 29/100).
Frequently asked questions
Which is better: the Motorola Signature or the Xiaomi 15 Ultra?
The Motorola Signature edges out the Xiaomi 15 Ultra by just 1 points — the two devices are very close in overall level.
What is the rating of the Motorola Signature and the Xiaomi 15 Ultra?
The Motorola Signature has a MobileRank rating of 86/100, the Xiaomi 15 Ultra — 85/100.
Should you choose the Motorola Signature over the Xiaomi 15 Ultra?
The Motorola Signature is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers. 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.