Oppo K12x vs Vivo iQOO 15
The Oppo K12x (2024) runs on the Qualcomm Snapdragon 695 5G, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 51/100 (a 35-point difference). Key differences: the Vivo iQOO 15 has the bigger battery (7000 mAh vs 5500); the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 592,015); the Vivo iQOO 15 has NFC for contactless payments, the Oppo K12x doesn't; the Oppo K12x is noticeably lighter (191g vs 215g).
Profile comparison
Category scores
Oppo K12x
Vivo iQOO 15
What makes Oppo K12x better?
- Lighter: 191g vs 215g
- Better portability (63/100 vs 48/100)
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 592015
- Better Geekbench Single: 3013 vs 905
- Better Geekbench Multi: 9287 vs 2101
- Bigger battery: 7000 vs 5500 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (94/100 vs 46/100)
- Better camera (78/100 vs 32/100)
- Longer battery life (85/100 vs 62/100)
- Better display (99/100 vs 79/100)
Comparison verdict
Comparing the Oppo K12x vs the Vivo iQOO 15, the Vivo iQOO 15 scores 35 points higher (86/100 vs 51/100). In the "performance" category, the Vivo iQOO 15 leads (94/100 vs 46/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 62/100). In the "performance" category, the Vivo iQOO 15 significantly outperforms the Oppo K12x (94/100 vs 46/100). In the "display" category, the Vivo iQOO 15 notably outperforms the Oppo K12x (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 significantly outperforms the Oppo K12x (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 notably outperforms the Oppo K12x (85/100 vs 62/100). In the "portability" category, the Oppo K12x notably outperforms the Vivo iQOO 15 (63/100 vs 48/100).
Specs comparison
| Specification | Oppo K12x | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 695 5G | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 592015 | 3758268 | |
| Geekbench Single | 905 | 3013 | |
| Geekbench Multi | 2101 | 9287 | |
| Display | 6.7" OLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 5500 mAh | 7000 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | 0W | 40W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 14, ColorOS 14 | Android 16 | |
| Brightness (peak) | 2100 nits | 6000 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 162.9×75.6×8.1 mm | 163.7×76.8×8.1 mm | |
| Weight | 191 g | 215 g | |
| Launch price | — | $599 |
Camera comparison
Oppo K12x
- Main: 50MP f/1.8
- Front: 16MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Oppo K12x
- 6.7" OLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Oppo K12x
- 5500 mAh
- Wired: 80W
- No wireless charging
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Oppo K12x and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Oppo K12x by 84.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo K12x
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 significantly outperforms the Oppo K12x (94/100 vs 46/100).
display
In the "display" category, the Vivo iQOO 15 notably outperforms the Oppo K12x (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15 significantly outperforms the Oppo K12x (78/100 vs 32/100).
battery
In the "battery" category, the Vivo iQOO 15 notably outperforms the Oppo K12x (85/100 vs 62/100).
portability
In the "portability" category, the Oppo K12x notably outperforms the Vivo iQOO 15 (63/100 vs 48/100).
Frequently asked questions
Which is better: the Oppo K12x or the Vivo iQOO 15?
The Vivo iQOO 15 significantly outperforms the Oppo K12x by 35 points (86/100 vs 51/100).
What is the rating of the Oppo K12x and the Vivo iQOO 15?
The Oppo K12x has a MobileRank rating of 51/100, the Vivo iQOO 15 — 86/100.
Which has the better camera: the Oppo K12x or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 32/100).
Which is more powerful: the Oppo K12x or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (94/100 vs 46/100).
Should you choose the Oppo K12x over the Vivo iQOO 15?
The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.