Realme C100 4G vs Vivo Y31d
The Realme C100 4G (2026) runs on the Helio G92 Max, while the Vivo Y31d (2026) runs on the Qualcomm Snapdragon 6s 4G Gen 2; launch prices were $269 and $185. By overall MobileRank rating, the Vivo Y31d leads — 41/100 vs 38/100 (a 3-point difference). Key differences: the Realme C100 4G has the bigger battery (8000 mAh vs 7200); the Vivo Y31d is faster in AnTuTu (505,682 vs 365,001); the Realme C100 4G has NFC for contactless payments, the Vivo Y31d doesn't.
Profile comparison
Category scores
Realme C100 4G
Vivo Y31d
What makes Realme C100 4G better?
- Bigger battery: 8000 vs 7200 mAh
- Overall rating 38/100
What makes Vivo Y31d better?
- Higher AnTuTu: 505682 vs 365001
- Better Geekbench Single: 484 vs 430
- Better Geekbench Multi: 1558 vs 1375
- Faster charging: 44W vs 15W
- Cheaper at launch: $185 vs $269
- Higher performance (36/100 vs 29/100)
- Longer battery life (60/100 vs 58/100)
- Better portability (43/100 vs 41/100)
Comparison verdict
Comparing the Realme C100 4G vs the Vivo Y31d, the Vivo Y31d scores 3 points higher (41/100 vs 38/100). Value score: Realme C100 4G — 22/100, Vivo Y31d — 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 Vivo Y31d is a bit better (36/100 vs 29/100). In the "display" category, both devices are on the same level — 55/100. In the "camera" category, both devices are on the same level — 30/100. In the "battery" category, the Vivo Y31d and the Realme C100 4G are nearly equal (60/100 vs 58/100). In the "portability" category, the Vivo Y31d and the Realme C100 4G are nearly equal (43/100 vs 41/100).
Specs comparison
| Specification | Realme C100 4G | Vivo Y31d | |
|---|---|---|---|
| Processor | Helio G92 Max | Qualcomm Snapdragon 6s 4G Gen 2 | |
| AnTuTu | 365001 | 505682 | |
| Geekbench Single | 430 | 484 | |
| Geekbench Multi | 1375 | 1558 | |
| Display | 6.8" IPS LCD | 6.8" IPS LCD | |
| Resolution | 720x1570 | 720x1570 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 8000 mAh | 7200 mAh | |
| Charging | 15W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Front camera | 8 MP | 8 MP | |
| RAM | 6GB / 8GB | 6GB / 8GB | |
| Storage | 128GB / 256GB | 128GB / 256GB | |
| OS | Android 16 / realme UI 7.0 | Android 16 | |
| Brightness (peak) | 1200 nits | 1250 nits | |
| NFC | yes | no | |
| Protection | IP68/IP69K | IP68/IP69 | |
| Dimensions | 166.5×78.2×8.6 mm | 166.6×78.4×8.4 mm | |
| Weight | 219 g | 219 g | |
| Launch price | $269 | $185 |
Camera comparison
Realme C100 4G
- Main: 50MP f/1.8
- Front: 8MP
Vivo Y31d
- Main: 50MP f/2.0
- Front: 8MP
Display comparison
Realme C100 4G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Vivo Y31d
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Battery and charging
Realme C100 4G
- 8000 mAh
- Wired: 15W
- No wireless charging
Vivo Y31d
- 7200 mAh
- Wired: 44W
- No wireless charging
Overall performance score
We compared Realme C100 4G and Vivo Y31d, covering their specs and all relevant benchmarks.
Vivo Y31d leads Realme C100 4G by 27.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $84. Vivo Y31d was $84 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo Y31d is a bit better (36/100 vs 29/100).
display
In the "display" category, both devices are on the same level — 55/100.
camera
In the "camera" category, both devices are on the same level — 30/100.
battery
In the "battery" category, the Vivo Y31d and the Realme C100 4G are nearly equal (60/100 vs 58/100).
portability
In the "portability" category, the Vivo Y31d and the Realme C100 4G are nearly equal (43/100 vs 41/100).
Frequently asked questions
Which is better: the Realme C100 4G or the Vivo Y31d?
The Vivo Y31d edges out the Realme C100 4G by just 3 points — the two devices are very close in overall level.
What is the rating of the Realme C100 4G and the Vivo Y31d?
The Realme C100 4G has a MobileRank rating of 38/100, the Vivo Y31d — 41/100.
Which is more powerful: the Realme C100 4G or the Vivo Y31d?
The Vivo Y31d leads on performance (36/100 vs 29/100).
Should you choose the Realme C100 4G over the Vivo Y31d?
Neither model stands out enough to recommend it for a specific use case: the clearest difference is performance — better on the Vivo Y31d (36/100 vs 29/100).