Apple’s rumored iPhone Air 2 could be approximately 0.4mm thinner than the current iPhone Air while carrying a higher-capacity battery, according to a post from the Korean Naver blog account yeux1122. If accurate, the next-generation model would measure about 5.2mm thick.

Apple lists the current iPhone Air at 5.6mm thick. A reduction of 0.4mm would make the iPhone Air 2 roughly 7% thinner than its predecessor. The rumored dimensions would also give it the same thickness as the iPhone Duo when that device is fully unfolded.

iPhone Air 2 could reach 5.2mm thickness

The claim does not provide a detailed explanation of how Apple might reduce the phone’s thickness. It instead focuses on the expected measurement and the apparent challenge of combining a slimmer design with a larger battery.

The reported 5.2mm figure would position the iPhone Air 2 as an especially thin device within Apple’s smartphone lineup. It would also put the phone’s thickness on par with the unfolded iPhone Duo, based on the measurements cited in the report.

These details remain unconfirmed. The information comes from yeux1122, a Korean blog account, and Apple has not announced the iPhone Air 2 or confirmed its specifications.

Reported battery capacity rises to 3,500mAh

A previous rumor claimed that the iPhone Air 2 would include a 3,500mAh battery. The current iPhone Air reportedly uses a 3,149mAh battery, making the rumored successor’s battery capacity about 11% higher in raw capacity.

A larger battery could help offset some of the compromises involved in a thinner design, although battery capacity alone does not establish how long a phone will last on a charge. Actual battery life would also depend on the device’s components and software, neither of which is detailed in the available reports.

Possible launch timing

The iPhone Air 2 is expected to launch early next year alongside the iPhone 18e and the regular iPhone 18, according to the information in the report. Apple has not confirmed that launch schedule or named the devices as upcoming products.

For now, the reported combination of a 5.2mm body and 3,500mAh battery is best treated as an unverified design and specification rumor. More definitive information would likely be needed before the phone’s dimensions, battery capacity, or release timing can be considered confirmed.