Should You Upgrade from the iPhone 15 Pro Max to the iPhone 18 Pro Max?
A spec-by-spec look at what actually changes when you move from the iPhone 15 Pro Max to the iPhone 18 Pro Max, 3 years apart.
Yes — the iPhone 18 Pro Max is a worthwhile upgrade
The iPhone 18 Pro Max is 3 years newer than the iPhone 15 Pro Max, and the BeastScore rises from 78.3 to 92.8. The biggest improvements: performance rated 16 points higher, camera rated 9 points higher, battery rated 24 points higher. Trade-offs to know: shorter optical zoom (−1x), 28 g heavier.
What you gain with the iPhone 18 Pro Max
- +Performance rated 16 points higher
- +Camera rated 9 points higher
- +Battery rated 24 points higher
- +Display rated 7 points higher
- +1,145 mAh bigger battery
- +18W faster wired charging
- +10W faster wireless charging
- +0.2" larger screen
- +1,000 nits brighter peak display
- +4 GB more RAM
What you give up
- −Shorter optical zoom (−1x)
- −28 g heavier
- −Launched $300 more expensive
| Spec | iPhone 15 Pro Max | iPhone 18 Pro Max | Change |
|---|---|---|---|
| BeastScore (overall) | 78.3 | 92.8 | +14.5 (19%) |
| Performance score | 80 | 96 | +16 (20%) |
| Camera score | 85 | 94 | +9 (11%) |
| Battery score | 70 | 94 | +24 (34%) |
| Display score | 88 | 95 | +7 (8%) |
| Battery capacity | 4,422 mAh | 5,567 mAh | +1,145 mAh (26%) |
| Wired charging | 27W | 45W | +18W (67%) |
| Wireless charging | 15W | 25W | +10W (67%) |
| Screen size | 6.7" | 6.9" | +0.2" (3%) |
| Refresh rate | 120Hz | 120Hz | No real change |
| Peak brightness | 2,000 nits | 3,000 nits | +1,000 nits (50%) |
| Main camera | 48 MP | 48 MP | No real change |
| Optical zoom | 5x | 4x | −1x (20%) |
| RAM | 8 GB | 12 GB | +4 GB (50%) |
| Weight | 221 g | 249 g | +28 g (13%) |
| Launch price | $1,199 | $1,499 | +$300 (25%) |
Upgrade if…
- You regularly run out of battery before the end of the day
- Photo quality is a priority for you
- You play demanding games or want the newest on-device AI features
- You use your phone outdoors a lot and want a brighter, smoother screen
- Your iPhone 15 Pro Max is 3+ years old and its battery has worn down
iPhone 15 Pro Max vs iPhone 18 Pro Max: Upgrade FAQ
Is it worth upgrading from the iPhone 15 Pro Max to the iPhone 18 Pro Max?
Yes — the iPhone 18 Pro Max is a worthwhile upgrade. The iPhone 18 Pro Max is 3 years newer than the iPhone 15 Pro Max, and the BeastScore rises from 78.3 to 92.8. The biggest improvements: performance rated 16 points higher, camera rated 9 points higher, battery rated 24 points higher. Trade-offs to know: shorter optical zoom (−1x), 28 g heavier.
What is the biggest difference between the iPhone 15 Pro Max and iPhone 18 Pro Max?
Performance rated 16 points higher: 80 on the iPhone 15 Pro Max vs 96 on the iPhone 18 Pro Max.
Does the iPhone 18 Pro Max have a bigger battery than the iPhone 15 Pro Max?
The iPhone 18 Pro Max has a 5,567 mAh battery versus 4,422 mAh on the iPhone 15 Pro Max (+1,145 mAh (26%)).
Who should upgrade to the iPhone 18 Pro Max?
Upgrade if: You regularly run out of battery before the end of the day; Photo quality is a priority for you; You play demanding games or want the newest on-device AI features; You use your phone outdoors a lot and want a brighter, smoother screen; Your iPhone 15 Pro Max is 3+ years old and its battery has worn down.