Realme C100x vs Samsung Galaxy A21s
Comparing the Realme C100x (2026) and the Samsung Galaxy A21s (2020) on specs and benchmarks. By overall MobileRank rating, the Realme C100x leads — 31/100 vs 19/100 (a 12-point difference). Key differences: the Realme C100x has the bigger battery (7500 mAh vs 5000); the main camera is 50 MP vs 48 MP.
Realme C100x
Samsung Galaxy A21s
- Bigger battery: 7500 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Longer battery life (52/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Better camera (25/100 vs 24/100)
- Better design/ergonomics (60/100 vs 50/100)
- Better value for money (95/100 vs 55/100)
Comparing the Realme C100x vs the Samsung Galaxy A21s, the Realme C100x scores 12 points higher (31/100 vs 19/100). In the "battery" category, the Realme C100x leads (52/100 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 C100x significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100). In the "camera" category, the Samsung Galaxy A21s and the Realme C100x are nearly equal (25/100 vs 24/100). In the "battery" category, the Realme C100x notably outperforms the Samsung Galaxy A21s (52/100 vs 36/100). In the "design" category, the Samsung Galaxy A21s is a bit better (60/100 vs 50/100). In the "value for money" category, the Samsung Galaxy A21s significantly outperforms the Realme C100x (95/100 vs 55/100).
| Specification | Realme C100x | Samsung Galaxy A21s | |
|---|---|---|---|
| Processor | — | Exynos 850 | |
| AnTuTu | — | 234339 | |
| Geekbench Single | — | 300 | |
| Geekbench Multi | — | 836 | |
| Display | 6.8" IPS LCD | 6.5" IPS LCD | |
| Resolution | 720x1640 | — | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 7500 mAh | 5000 mAh | |
| Charging | — | — | |
| Main camera | 50 MP | 48 MP | |
| Front camera | 5 MP | 13 MP | |
| RAM | 4GB | 3GB / 4GB / 6GB | |
| Storage | 128GB / 256GB | 32GB / 64GB | |
| OS | Android 16 | — | |
| NFC | yes | yes | |
| Protection | IP64 | — | |
| Dimensions | — | 163.7×75.3×8.9 mm | |
| Weight | — | 192 g | |
| Price | — | $215 |
Realme C100x
- Main: 50MP f/f/1.8
- Front: 5MP
Samsung Galaxy A21s
- Main: 48MP
- Front: 13MP
Realme C100x
- 6.8" IPS LCD
- Resolution: 720x1640
- Refresh rate: 120 Hz
Samsung Galaxy A21s
- 6.5" IPS LCD
- Refresh rate: 60 Hz
Realme C100x
- 7500 mAh
- No wireless charging
Samsung Galaxy A21s
- 5000 mAh
- No wireless charging
Realme C100x
Price unknownperformance
In the "performance" category, both devices are on the same level — 0/100.
display
In the "display" category, the Realme C100x significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100).
camera
In the "camera" category, the Samsung Galaxy A21s and the Realme C100x are nearly equal (25/100 vs 24/100).
battery
In the "battery" category, the Realme C100x notably outperforms the Samsung Galaxy A21s (52/100 vs 36/100).
design
In the "design" category, the Samsung Galaxy A21s is a bit better (60/100 vs 50/100).
value for money
In the "value for money" category, the Samsung Galaxy A21s significantly outperforms the Realme C100x (95/100 vs 55/100).
Which is better: the Realme C100x or the Samsung Galaxy A21s?
The Realme C100x is noticeably better than the Samsung Galaxy A21s — the overall rating gap is 12 points.
What is the rating of the Realme C100x and the Samsung Galaxy A21s?
The Realme C100x has a MobileRank rating of 31/100, the Samsung Galaxy A21s — 19/100.
Should you choose the Realme C100x over the Samsung Galaxy A21s?
The Realme C100x is a better fit for everyday use. The Samsung Galaxy A21s is a better fit for budget-conscious buyers.