Apple’s next iPhone Air could be even thinner than its predecessor, with a new leak suggesting the company is working on a slimmer design without sacrificing battery capacity.
According to Korean Naver blogger yeux1122, the iPhone Air 2 will measure just 5.2mm thick, making it about 0.4mm thinner than the current model. That would put it at roughly the same thickness as the new iPhone Duo when unfolded.
For context, the original iPhone Air measures 5.6mm, meaning its successor could be about 7% thinner. That’s a noticeable reduction for a phone that’s already designed to keep things as slim and light as possible.
Perhaps more interesting is that Apple manages to squeeze a larger battery into the smaller frame. Previous rumors suggest that the iPhone Air 2 will have a 3,500mAh battery, up from the current model’s 3,149mAh capacity.
That works out to an increase of about 11%, potentially addressing one of the biggest concerns surrounding ultra-thin smartphones. Of course, a larger battery does not automatically guarantee more battery life. However, it could give the Air 2 some welcome extra endurance.
The rumored changes have already sparked discussion among iPhone Air owners on Reddit. In particular, these discussions focus on whether an even thinner phone makes a lot of sense when adding a protective case.
Some users argue that the current Air is already durable enough to use without one. Meanwhile, others say that a case actually makes the slim design easier to grip, especially around the raised camera section. There are also calls for Apple to address other compromises. For example, one commenter pointed to the lack of stereo speakers as a deal breaker. Others are hoping for an additional rear camera alongside the expected battery improvements.
Neither of these upgrades has been confirmed, however, and the latest leak focuses specifically on the phone’s thickness and battery capacity.
The iPhone Air 2 is expected to launch in early 2027, potentially alongside the standard iPhone 18 and iPhone 18e.
If the rumors prove true, Apple could make its thinnest iPhone even slimmer. At the same time, they can address some of the practical trade-offs that come with such a compact design.