Realme C100i (India) vs Redmi K90 Ultra
The Realme C100i (India) (2026) runs on the Unisoc T7250, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $105 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 34/100 (a 39-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the main camera is 8 MP vs 50 MP; the Redmi K90 Ultra has NFC for contactless payments, the Realme C100i (India) doesn't; the Realme C100i (India) is noticeably lighter (210g vs 227g).
Profile comparison
Category scores
Realme C100i (India)
Redmi K90 Ultra
What makes Realme C100i (India) better?
- Lighter: 210g vs 227g
- Cheaper at launch: $105 vs $420
- Better portability (45/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Better Geekbench Single: 3013 vs 600
- Better Geekbench Multi: 9287 vs 1800
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 15W
- Better main camera: 50MP vs 8MP
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 32/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 53/100)
- Better display (94/100 vs 55/100)
Comparison verdict
Comparing the Realme C100i (India) vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 39 points higher (73/100 vs 34/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 32/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 53/100). Value score: Realme C100i (India) — 54/100, Redmi K90 Ultra — 72/100; 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 Redmi K90 Ultra significantly outperforms the Realme C100i (India) (92/100 vs 32/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme C100i (India) (94/100 vs 55/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Realme C100i (India) (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Realme C100i (India) (78/100 vs 53/100). In the "portability" category, the Realme C100i (India) is a bit better (45/100 vs 40/100).
Specs comparison
| Specification | Realme C100i (India) | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Unisoc T7250 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | — | 3233695 | |
| Geekbench Single | 600 | 3013 | |
| Geekbench Multi | 1800 | 9287 | |
| Display | 6.8" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1570 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6500 mAh | 8550 mAh | |
| Charging | 15W | 100W | |
| Main camera | 8 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 4GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 900 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68/IP69 | |
| Dimensions | 166.5×78.2×8.7 mm | 162.9×77.9×8.2 mm | |
| Weight | 210 g | 227 g | |
| Launch price | $105 | $420 |
Camera comparison
Realme C100i (India)
- Main: 8MP f/2.0
- Front: 5MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Realme C100i (India)
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Realme C100i (India)
- 6500 mAh
- Wired: 15W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Benchmarks
Launch prices and where to check today's
Launch price difference: $315. Realme C100i (India) was $315 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C100i (India) (92/100 vs 32/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme C100i (India) (94/100 vs 55/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Realme C100i (India) (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Realme C100i (India) (78/100 vs 53/100).
portability
In the "portability" category, the Realme C100i (India) is a bit better (45/100 vs 40/100).
Frequently asked questions
Which is better: the Realme C100i (India) or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme C100i (India) by 39 points (73/100 vs 34/100).
What is the rating of the Realme C100i (India) and the Redmi K90 Ultra?
The Realme C100i (India) has a MobileRank rating of 34/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Realme C100i (India) or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Realme C100i (India) or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 32/100).
Should you choose the Realme C100i (India) over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.