Quick answer · October 2026
The iPhone with the longest battery life
Which iPhone lasts longest on a charge? iPhone 18 Pro Max, of the iPhones Apple sells today (45 h video). Ranked by Apple’s own “video playback” figure, the one battery test Apple publishes for every model, so the numbers compare like for like.
Battery or lighter body?
iPhone Air vs iPhone 18 Pro battery life
Apple rates iPhone 18 Pro for up to 36 hours of video playback, against 27 hours for iPhone Air — a 9-hour difference in the published figures. Air is 46 g lighter (165 vs 211 g) and 3.11 mm thinner (5.64 vs 8.75 mm). Choose the Pro if the higher battery rating matters more; choose Air if carrying less weight and thickness matters more.
These are Apple’s video-playback claims, not our own battery test or a promise of everyday runtime. Air’s figure here excludes the optional MagSafe battery. Use, settings, network conditions and battery age affect actual results. Sources: Apple iPhone Air specifications and Apple iPhone 18 Pro specifications.
Read the full Air vs 18 Pro comparison → · Open Air and 18 Pro in the comparison tool →
Full ranking
Every iPhone, ranked.
Figures from Apple's technical specifications for each model; prices are Apple US starting prices, checked October 2026.
FAQ
Questions people ask
- Which iPhone lasts longest on a charge?
- iPhone 18 Pro Max — 45 h video. Next among current models is iPhone Duo (44 h video).
- How does iPhone 18 Pro Max compare with iPhone Duo?
- iPhone 18 Pro Max: 45 h video. iPhone Duo: 44 h video. See the two drawn to scale on the head-to-head page.