OPPO K15 Pro+ vs Vivo X21i
The OPPO K15 Pro+ (2026) runs on the MediaTek Dimensity 9500s, while the Vivo X21i (2018) runs on the MediaTek Helio P60. By overall MobileRank rating, the OPPO K15 Pro+ leads — 71/100 vs 29/100 (a 42-point difference). Key differences: the OPPO K15 Pro+ has the bigger battery (8000 mAh vs 3425); the main camera is 50 MP vs 12 MP; the OPPO K15 Pro+ is faster in AnTuTu (3,121,723 vs 232,802); the OPPO K15 Pro+ has NFC for contactless payments, the Vivo X21i doesn't; the Vivo X21i is noticeably lighter (159g vs 219g).
OPPO K15 Pro+
Vivo X21i
- Higher AnTuTu: 3121723 vs 232802
- Better Geekbench Single: 2680 vs 341
- Better Geekbench Multi: 8358 vs 779
- Bigger battery: 8000 vs 3425 mAh
- Better main camera: 50MP vs 12MP
- Higher performance (89/100 vs 17/100)
- Better camera (35/100 vs 15/100)
- Longer battery life (75/100 vs 15/100)
- Better display (94/100 vs 82/100)
- Lighter: 159g vs 219g
- Better portability (94/100 vs 44/100)
Comparing the OPPO K15 Pro+ vs the Vivo X21i, the OPPO K15 Pro+ scores 42 points higher (71/100 vs 29/100). In the "performance" category, the OPPO K15 Pro+ leads (89/100 vs 17/100). In the "camera" category, the OPPO K15 Pro+ leads (35/100 vs 15/100). In the "battery" category, the OPPO K15 Pro+ leads (75/100 vs 15/100). In the "performance" category, the OPPO K15 Pro+ significantly outperforms the Vivo X21i (89/100 vs 17/100). In the "display" category, the OPPO K15 Pro+ is a bit better (94/100 vs 82/100). In the "camera" category, the OPPO K15 Pro+ notably outperforms the Vivo X21i (35/100 vs 15/100). In the "battery" category, the OPPO K15 Pro+ significantly outperforms the Vivo X21i (75/100 vs 15/100). In the "portability" category, the Vivo X21i significantly outperforms the OPPO K15 Pro+ (94/100 vs 44/100).
| Specification | OPPO K15 Pro+ | Vivo X21i | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500s | MediaTek Helio P60 | |
| AnTuTu | 3121723 | 232802 | |
| Geekbench Single | 2680 | 341 | |
| Geekbench Multi | 8358 | 779 | |
| Display | 6.8" AMOLED | 6.3" Super AMOLED | |
| Resolution | 2772x1272 | 1080x2280 | |
| Refresh rate | 165 Hz | — | |
| Battery | 8000 mAh | 3425 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 12 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 24 MP | |
| RAM | 12GB | 4GB / 6GB | |
| Storage | 256GB / 512GB | 64GB / 128GB | |
| OS | Android 16 | Android 8.1 (Oreo); Funtouch 4 | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 162.4×77.5×8.3 mm | 154.4×75.0×7.0 mm | |
| Weight | 219 g | 159 g | |
| Launch price | $509 | — |
OPPO K15 Pro+
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X21i
- Main: 12MP f/f/1.8
- Front: 24MP
OPPO K15 Pro+
- 6.8" AMOLED
- Resolution: 2772x1272
- Refresh rate: 165 Hz
Vivo X21i
- 6.3" Super AMOLED
- Resolution: 1080x2280
- Refresh rate: —
OPPO K15 Pro+
- 8000 mAh
- Wired: 100W
- No wireless charging
Vivo X21i
- 3425 mAh
- Wireless charging: no data
We compared OPPO K15 Pro+ and Vivo X21i, covering their specs and all relevant benchmarks.
OPPO K15 Pro+ leads Vivo X21i by 1240.9% in our overall performance rating.
Vivo X21i
Price unknownperformance
In the "performance" category, the OPPO K15 Pro+ significantly outperforms the Vivo X21i (89/100 vs 17/100).
display
In the "display" category, the OPPO K15 Pro+ is a bit better (94/100 vs 82/100).
camera
In the "camera" category, the OPPO K15 Pro+ notably outperforms the Vivo X21i (35/100 vs 15/100).
battery
In the "battery" category, the OPPO K15 Pro+ significantly outperforms the Vivo X21i (75/100 vs 15/100).
portability
In the "portability" category, the Vivo X21i significantly outperforms the OPPO K15 Pro+ (94/100 vs 44/100).
Which is better: the OPPO K15 Pro+ or the Vivo X21i?
The OPPO K15 Pro+ significantly outperforms the Vivo X21i by 42 points (71/100 vs 29/100).
What is the rating of the OPPO K15 Pro+ and the Vivo X21i?
The OPPO K15 Pro+ has a MobileRank rating of 71/100, the Vivo X21i — 29/100.
Which has the better camera: the OPPO K15 Pro+ or the Vivo X21i?
The OPPO K15 Pro+ leads on camera score (35/100 vs 15/100).
Which is more powerful: the OPPO K15 Pro+ or the Vivo X21i?
The OPPO K15 Pro+ leads on performance (89/100 vs 17/100).
Should you choose the OPPO K15 Pro+ over the Vivo X21i?
The OPPO K15 Pro+ is a better fit for gamers and power users, those who care about battery life. The Vivo X21i is a better fit for everyday use.