Motorola Signature vs Redmi K40
The Motorola Signature (2026) runs on the Qualcomm Snapdragon 8 Gen 5, while the Redmi K40 (2021) runs on the Qualcomm Snapdragon 870; launch prices were $699 and $309. By overall MobileRank rating, the Motorola Signature leads — 86/100 vs 54/100 (a 32-point difference). Key differences: the Motorola Signature has the bigger battery (5200 mAh vs 4520); the main camera is 50 MP vs 48 MP; the Motorola Signature is faster in AnTuTu (3,057,215 vs 1,010,069).
Profile comparison
Category scores
Motorola Signature
Redmi K40
What makes Motorola Signature better?
- Higher AnTuTu: 3057215 vs 1010069
- Better Geekbench Single: 2833 vs 1298
- Better Geekbench Multi: 9119 vs 3520
- Bigger battery: 5200 vs 4520 mAh
- Faster charging: 90W vs 33W
- Better main camera: 50MP vs 48MP
- Lighter: 186g vs 196g
- Higher performance (90/100 vs 61/100)
- Better camera (91/100 vs 36/100)
- Longer battery life (77/100 vs 42/100)
- Better display (84/100 vs 79/100)
- Better portability (78/100 vs 64/100)
What makes Redmi K40 better?
- Cheaper at launch: $309 vs $699
- Overall rating 54/100
Comparison verdict
Comparing the Motorola Signature vs the Redmi K40, the Motorola Signature scores 32 points higher (86/100 vs 54/100). In the "performance" category, the Motorola Signature leads (90/100 vs 61/100). In the "camera" category, the Motorola Signature leads (91/100 vs 36/100). In the "battery" category, the Motorola Signature leads (77/100 vs 42/100). Value score: Motorola Signature — 86/100, Redmi K40 — 46/100; 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 Motorola Signature notably outperforms the Redmi K40 (90/100 vs 61/100). In the "display" category, the Motorola Signature is a bit better (84/100 vs 79/100). In the "camera" category, the Motorola Signature significantly outperforms the Redmi K40 (91/100 vs 36/100). In the "battery" category, the Motorola Signature significantly outperforms the Redmi K40 (77/100 vs 42/100). In the "portability" category, the Motorola Signature is a bit better (78/100 vs 64/100).
Specs comparison
| Specification | Motorola Signature | Redmi K40 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 5 | Qualcomm Snapdragon 870 | |
| AnTuTu | 3057215 | 1010069 | |
| Geekbench Single | 2833 | 1298 | |
| Geekbench Multi | 9119 | 3520 | |
| Display | 6.8" AMOLED | 6.7" AMOLED | |
| Resolution | 1264x2780 | 2400x1080 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5200 mAh | 4520 mAh | |
| Charging | 90W | 33W | |
| Wireless charging | 50W | — | |
| DXOMark (camera) | 164 | — | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 11 | |
| Brightness (peak) | 6200 nits | 1300 nits | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | 162.1×76.4×7.0 mm | 163.7×76.4×7.8 mm | |
| Weight | 186 g | 196 g | |
| Launch price | $699 | $309 |
Camera comparison
Motorola Signature
- Main: 50MP f/1.8
- Ultrawide: 13MP
- Telephoto: 50MP
- Front: 32MP
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Motorola Signature
- 6.8" AMOLED
- Resolution: 1264x2780
- Refresh rate: 120 Hz
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Battery and charging
Motorola Signature
- 5200 mAh
- Wired: 90W
- Wireless: 50W
Redmi K40
- 4520 mAh
- Wired: 33W
- Wireless charging: no data
Overall performance score
We compared Motorola Signature and Redmi K40, covering their specs and all relevant benchmarks.
Motorola Signature leads Redmi K40 by 202.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $390. Redmi K40 was $390 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Motorola Signature notably outperforms the Redmi K40 (90/100 vs 61/100).
display
In the "display" category, the Motorola Signature is a bit better (84/100 vs 79/100).
camera
In the "camera" category, the Motorola Signature significantly outperforms the Redmi K40 (91/100 vs 36/100).
battery
In the "battery" category, the Motorola Signature significantly outperforms the Redmi K40 (77/100 vs 42/100).
portability
In the "portability" category, the Motorola Signature is a bit better (78/100 vs 64/100).
Frequently asked questions
Which is better: the Motorola Signature or the Redmi K40?
The Motorola Signature significantly outperforms the Redmi K40 by 32 points (86/100 vs 54/100).
What is the rating of the Motorola Signature and the Redmi K40?
The Motorola Signature has a MobileRank rating of 86/100, the Redmi K40 — 54/100.
Which has the better camera: the Motorola Signature or the Redmi K40?
The Motorola Signature leads on camera score (91/100 vs 36/100).
Which is more powerful: the Motorola Signature or the Redmi K40?
The Motorola Signature leads on performance (90/100 vs 61/100).
Should you choose the Motorola Signature over the Redmi K40?
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 Redmi K40 is a better fit for active users.