Realme C100 4G vs Samsung Galaxy A21s
The Realme C100 4G (2026) runs on the MediaTek Helio G92 Max, while the Samsung Galaxy A21s (2020) runs on the Exynos 850. By overall MobileRank rating, the Realme C100 4G leads — 30/100 vs 19/100 (a 11-point difference). Key differences: the Realme C100 4G has the bigger battery (8000 mAh vs 5000); the main camera is 50 MP vs 48 MP; the Samsung Galaxy A21s is noticeably lighter (192g vs 219g).
Realme C100 4G
Samsung Galaxy A21s
- Bigger battery: 8000 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Longer battery life (54/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Lighter: 192g vs 219g
- Better camera (25/100 vs 24/100)
- Better design/ergonomics (60/100 vs 26/100)
- Better value for money (95/100 vs 55/100)
Comparing the Realme C100 4G vs the Samsung Galaxy A21s, the Realme C100 4G scores 11 points higher (30/100 vs 19/100). In the "battery" category, the Realme C100 4G leads (54/100 vs 36/100). In the "value for money" category, the Samsung Galaxy A21s leads (95/100 vs 55/100). In the "performance" category, both devices are on the same level — 0/100. In the "display" category, the Realme C100 4G significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100). In the "camera" category, the Samsung Galaxy A21s and the Realme C100 4G are nearly equal (25/100 vs 24/100). In the "battery" category, the Realme C100 4G notably outperforms the Samsung Galaxy A21s (54/100 vs 36/100). In the "design" category, the Samsung Galaxy A21s significantly outperforms the Realme C100 4G (60/100 vs 26/100). In the "value for money" category, the Samsung Galaxy A21s significantly outperforms the Realme C100 4G (95/100 vs 55/100).
| Specification | Realme C100 4G | Samsung Galaxy A21s | |
|---|---|---|---|
| Processor | MediaTek Helio G92 Max | Exynos 850 | |
| AnTuTu | — | 234339 | |
| Geekbench Single | — | 300 | |
| Geekbench Multi | — | 836 | |
| Display | 6.8" IPS LCD | 6.5" IPS LCD | |
| Resolution | 720x1570 | — | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 8000 mAh | 5000 mAh | |
| Charging | 15W | — | |
| Main camera | 50 MP | 48 MP | |
| Front camera | 8 MP | 13 MP | |
| RAM | 8GB | 3GB / 4GB / 6GB | |
| Storage | 256GB | 32GB / 64GB | |
| OS | Android 16, Realme UI 7.0 | — | |
| Brightness (peak) | 1200 nits | — | |
| NFC | yes | yes | |
| Protection | IP66 | — | |
| Dimensions | 166.5×78.2×8.6 mm | 163.7×75.3×8.9 mm | |
| Weight | 219 g | 192 g | |
| Price | — | $215 |
Realme C100 4G
- Main: 50MP f/f/1.8
- Front: 8MP
Samsung Galaxy A21s
- Main: 48MP
- Front: 13MP
Realme C100 4G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Samsung Galaxy A21s
- 6.5" IPS LCD
- Refresh rate: 60 Hz
Realme C100 4G
- 8000 mAh
- Wired: 15W
- No wireless charging
Samsung Galaxy A21s
- 5000 mAh
- No wireless charging
Realme C100 4G
Price unknownperformance
In the "performance" category, both devices are on the same level — 0/100.
display
In the "display" category, the Realme C100 4G significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100).
camera
In the "camera" category, the Samsung Galaxy A21s and the Realme C100 4G are nearly equal (25/100 vs 24/100).
battery
In the "battery" category, the Realme C100 4G notably outperforms the Samsung Galaxy A21s (54/100 vs 36/100).
design
In the "design" category, the Samsung Galaxy A21s significantly outperforms the Realme C100 4G (60/100 vs 26/100).
value for money
In the "value for money" category, the Samsung Galaxy A21s significantly outperforms the Realme C100 4G (95/100 vs 55/100).
Which is better: the Realme C100 4G or the Samsung Galaxy A21s?
The Realme C100 4G is noticeably better than the Samsung Galaxy A21s — the overall rating gap is 11 points.
What is the rating of the Realme C100 4G and the Samsung Galaxy A21s?
The Realme C100 4G has a MobileRank rating of 30/100, the Samsung Galaxy A21s — 19/100.
Should you choose the Realme C100 4G over the Samsung Galaxy A21s?
The Realme C100 4G is a better fit for everyday use. The Samsung Galaxy A21s is a better fit for budget-conscious buyers.