Invens NOTE 15P vs Oukitel C57 S (2026 registration)
On the EU energy label the Oukitel C57 S (2026 registration) comes out ahead in 3 of the 4 measured categories where the two differ. Durability score: Invens NOTE 15P 23/100, Oukitel C57 S (2026 registration) 50/100.
| Invens NOTE 15P | Oukitel C57 S (2026 registration) | |
|---|---|---|
| Energy class | B | B |
| Durability score | 23/100 | 50/100 |
| Device | smartphone | smartphone |
| Operating system | Android | Android |
| Battery endurance per charge | 46.8 h | 41.6 h |
| Battery lasts at least | 800 charge cycles | 1,000 charge cycles |
| Battery capacity | 4,250 mAh | 4,300 mAh |
| Drops survived without defect | 59 | 270 |
| Drop reliability class | D | A |
| Repairability index | 3.16/5 | 3.57/5 |
| Repairability class | C | C |
| OS updates for at least | 5 years | 5 years |
| Dust & water protection | IP44 | IP54 |
| Scratch resistance | Mohs 8 | Mohs 5 |
| User-replaceable battery | Yes | Yes |
| Foldable | No | No |
| Charging power | 10 W | 5 W |
| Charging port | USB-C | USB-C |
| Model numbers | NOTE 15P | C57 S |
Highlighted cells are better on that measure. Source: EU energy label register (EPREL); values as declared by the suppliers.