Oppo A55s 5G vs Xiaomi 18 Pro Max
The Oppo A55s 5G (2021) runs on the Qualcomm Snapdragon 480, while the Xiaomi 18 Pro Max (2026) runs on the Qualcomm Snapdragon 8 Elite Extreme Gen 6. By overall MobileRank rating, the Xiaomi 18 Pro Max leads — 92/100 vs 33/100 (a 59-point difference). Key differences: the Xiaomi 18 Pro Max has the bigger battery (8500 mAh vs 4000); the main camera is 13 MP vs 200 MP; the Xiaomi 18 Pro Max is faster in AnTuTu (5,001,234 vs 435,710); the Xiaomi 18 Pro Max has NFC for contactless payments, the Oppo A55s 5G doesn't; the Oppo A55s 5G is noticeably lighter (178g vs 235g).
Profile comparison
Category scores
Oppo A55s 5G
Xiaomi 18 Pro Max
What makes Oppo A55s 5G better?
- Lighter: 178g vs 235g
- Better portability (70/100 vs 33/100)
What makes Xiaomi 18 Pro Max better?
- Higher AnTuTu: 5001234 vs 435710
- Better Geekbench Single: 4327 vs 689
- Better Geekbench Multi: 12873 vs 1597
- Bigger battery: 8500 vs 4000 mAh
- Better main camera: 200MP vs 13MP
- Higher refresh rate: 120Hz vs 90Hz
- Higher performance (100/100 vs 38/100)
- Better camera (100/100 vs 10/100)
- Longer battery life (92/100 vs 32/100)
- Better display (82/100 vs 54/100)
Comparison verdict
Comparing the Oppo A55s 5G vs the Xiaomi 18 Pro Max, the Xiaomi 18 Pro Max scores 59 points higher (92/100 vs 33/100). In the "performance" category, the Xiaomi 18 Pro Max leads (100/100 vs 38/100). In the "camera" category, the Xiaomi 18 Pro Max leads (100/100 vs 10/100). In the "battery" category, the Xiaomi 18 Pro Max leads (92/100 vs 32/100). In the "performance" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (100/100 vs 38/100). In the "display" category, the Xiaomi 18 Pro Max notably outperforms the Oppo A55s 5G (82/100 vs 54/100). In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (100/100 vs 10/100). In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (92/100 vs 32/100). In the "portability" category, the Oppo A55s 5G significantly outperforms the Xiaomi 18 Pro Max (70/100 vs 33/100).
Specs comparison
| Specification | Oppo A55s 5G | Xiaomi 18 Pro Max | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 480 | Qualcomm Snapdragon 8 Elite Extreme Gen 6 | |
| AnTuTu | 435710 | 5001234 | |
| Geekbench Single | 689 | 4327 | |
| Geekbench Multi | 1597 | 12873 | |
| Display | 6.5" LCD IPS | 6.9" LTPO AMOLED | |
| Resolution | 1080x2400 | 1208x2624 | |
| Refresh rate | 90 Hz | 120 Hz | |
| Battery | 4000 mAh | 8500 mAh | |
| Charging | — | 100W | |
| Wireless charging | — | 50W | |
| Main camera | 13 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 8 MP | 50 MP | |
| RAM | — | 12GB / 16GB | |
| Storage | 64GB | 256GB / 512GB / 1TB | |
| OS | Android 11 Red Velvet Cake | Android 17 | |
| Brightness (peak) | 550 nits | 4000 nits | |
| NFC | no | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 162.1×74.7×8.2 mm | 163.4×77.6×8.4 mm | |
| Weight | 178 g | 235 g | |
| Launch price | — | $986 |
Camera comparison
Oppo A55s 5G
- Main: 13MP
- Front: 8MP
Xiaomi 18 Pro Max
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Oppo A55s 5G
- 6.5" LCD IPS
- Resolution: 1080x2400
- Refresh rate: 90 Hz
Xiaomi 18 Pro Max
- 6.9" LTPO AMOLED
- Resolution: 1208x2624
- Refresh rate: 120 Hz
Battery and charging
Oppo A55s 5G
- 4000 mAh
- Wireless charging: no data
Xiaomi 18 Pro Max
- 8500 mAh
- Wired: 100W
- Wireless: 50W
Overall performance score
We compared Oppo A55s 5G and Xiaomi 18 Pro Max, covering their specs and all relevant benchmarks.
Xiaomi 18 Pro Max leads Oppo A55s 5G by 91.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo A55s 5G
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (100/100 vs 38/100).
display
In the "display" category, the Xiaomi 18 Pro Max notably outperforms the Oppo A55s 5G (82/100 vs 54/100).
camera
In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (100/100 vs 10/100).
battery
In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G (92/100 vs 32/100).
portability
In the "portability" category, the Oppo A55s 5G significantly outperforms the Xiaomi 18 Pro Max (70/100 vs 33/100).
Frequently asked questions
Which is better: the Oppo A55s 5G or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max significantly outperforms the Oppo A55s 5G by 59 points (92/100 vs 33/100).
What is the rating of the Oppo A55s 5G and the Xiaomi 18 Pro Max?
The Oppo A55s 5G has a MobileRank rating of 33/100, the Xiaomi 18 Pro Max — 92/100.
Which has the better camera: the Oppo A55s 5G or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on camera score (100/100 vs 10/100).
Which is more powerful: the Oppo A55s 5G or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on performance (100/100 vs 38/100).
Should you choose the Oppo A55s 5G over the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.