New code discovered in iOS 27 hints that Apple’s upcoming iPhone 18 Pro and iPhone 18 Pro Max may charge up to 33 percent faster than the current iPhone 17 Pro models, potentially trimming off nearly a quarter from today’s fast-charge times. The breakthrough comes from internal settings in the system software flagged by leaker “pdfu,” showing a marked increase in the charging rate for the Pro series.
Specifically, if the phones are able to sustain that elevated charge rate throughout a full fast-charging session, that’s estimated to result in about a 25 percent faster top-up compared to their predecessors.
Other Models Also Seeing Charging Boosts
The findings suggest the standard iPhone 18 will match the Pro models’ higher charging rate. Meanwhile, the rumored iPhone 18e is said to benefit from an even larger leap—around 69 percent faster than the iPhone 17e. The iPhone Air 2 is also expected to see improvement, charging roughly 27 percent faster than the current iPhone Air.
One caveat: Apple’s first foldable iPhone apparently won’t gain this faster charging boost. According to the same source data, its charging rate lines up with that of the iPhone 17 and iPhone 17 Pro, rather than the ramps seen in the other 2026-27 models.
What to Expect—and Timing
The timing of the reveal is tight. The Pro models are expected to be introduced at Apple’s “Surprise and shine” event on September 9, 2026. Other models—the iPhone 18e, iPhone 18, and iPhone Air 2—are tipped for a spring 2027 release.
Real-world charging always depends on variables: battery health, temperature, how full the battery already is, and whether the charger can deliver consistent power. So while the headline figures are promising, actual gains for users may be more modest than the code suggests.
This marks a significant change if it holds. Apple has often been criticized for charging speeds behind competitors; improving charge rate by 25-30 percent could reframe its position. Faster topping up means less time tethered to plugs, more flexibility—and another tick in the “Pro” column during the unveiling.
