Apple rates the iPhone 18 Pro for up to 36 hours of video playback and up to 33 hours of streamed video, and the Pro Max for 45 and 40. Streaming costs the smaller phone 3 hours and the larger one 5, and Apple publishes both numbers without ever explaining the difference.
The streamed figure is the one most people are actually living in, and it is the number that shrinks the Pro Max advantage. On local playback the Pro Max leads by 9 hours. On streamed video it leads by 7.
Key facts: the two video ratings Apple publishes
| Rating | iPhone 18 Pro | iPhone 18 Pro Max |
|---|---|---|
| Typical use | Up to 24 hours | Up to 30 hours |
| Video playback | Up to 36 hours | Up to 45 hours |
| Streamed video | Up to 33 hours | Up to 40 hours |
| Difference | 3 hours | 5 hours |
| Difference as a share of playback | About 8 percent | About 11 percent |
| Test conditions | Not published | Not published |
| Battery capacity | Not published | Not published |
Those percentages are ours, worked out from Apple’s own hours. Apple states the pairs and leaves the subtraction to the reader, which is why the streaming penalty rarely appears in coverage of the phone.
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Why the larger phone gives up more
The Pro Max does not lose more time because it streams worse. It loses more hours because it has more hours to lose, and the penalty appears to scale with the rating rather than sit at a fixed number. Eleven percent of 45 hours is a longer evening than 8 percent of 36.
There is a more useful way to read it. The iPhone 18 Pro streamed figure of 33 hours is exactly the iPhone 17 Pro local playback figure, and the iPhone 18 Pro Max streamed figure of 40 hours is an hour above the iPhone 17 Pro Max local playback figure of 39. Our iPhone 18 Pro against iPhone 17 Pro comparison covers the rest of that generational gap.
Every current model Apple rates both ways
| Model | Video playback | Streamed video | Gap |
|---|---|---|---|
| iPhone 18 Pro | 36 hours | 33 hours | 3 hours |
| iPhone 18 Pro Max | 45 hours | 40 hours | 5 hours |
| iPhone Duo, outer display | 44 hours | 37 hours | 7 hours |
| iPhone Duo, inner display | 31 hours | 26 hours | 5 hours |
| iPhone 17 Pro | 33 hours | 30 hours | 3 hours |
| iPhone 17 Pro Max | 39 hours | 35 hours | 4 hours |
| iPhone 17 | 30 hours | 27 hours | 3 hours |
| iPhone Air | 27 hours | 22 hours | 5 hours |
| iPhone 16 Pro | 27 hours | 22 hours | 5 hours |
The iPhone Duo is the outlier, giving up 7 hours on its outer display and 5 on the inner one, which is about 16 percent either way. Every iPhone in the table loses something, so the penalty is a property of Apple’s test rather than of any single phone.
What Apple does not define about either test
Apple publishes no test conditions for any of these figures. There is no stated network type, no bit rate, no service, no brightness setting and no content length, for either the playback figure or the streamed one. The only qualifier Apple attaches anywhere is in the press release, which marks the video playback hours as the eSIM-only model’s.
That makes the gap between the two numbers the most honest thing about them. It is internally consistent, measured by the same company on the same phone, and it is the closest published guide to how much a phone gives up when the video comes over a network. Our breakdown of the 45-hour claim goes through what each rating does and does not cover.
What Apple has not said
- The conditions behind either video figure, including network, resolution, bit rate or brightness.
- Any rating for streaming at a named quality level, or for downloaded content played offline.
- Battery capacity in milliamp hours for either model, which would let anyone check the arithmetic.
- Whether the typical use figures of 24 and 30 hours include any streaming at all.
- A streamed-video figure for video capture, gaming, navigation or calls, none of which Apple rates.
Pre-orders open today, Saturday, September 12, at 5 a.m. PT, which is 12:00 UTC, and the phones reach stores on Friday, September 18. If you are choosing between the two sizes for watching rather than for anything else, the streamed column is the one to compare, and it puts the gap at 7 hours.
