Fairly obviously, the iPhone Air 2 is expected to adopt much of the iPhone Duo engineering, making it thinner. What's less obvious is that its battery is expected to be at least as good.
According to a post on the Korean Naver blog by the familiar "yeux1122" account, which has been responsible for multiple leaks in recent years, the iPhone Air 2 could measure around 5.2mm thick, compared to the iPhone Air's 5.6mm. Notably, the iPhone Duo comes in at the same 5.2mm when open.
The prospect of a future iPhone Air becoming even thinner than the previous model isn't a surprise. But a previous report claiming increased battery capacity makes this report more interesting. Normally, making an iPhone thinner would mean reducing battery capacity. However, the leaker claims that battery capacity will actually increase, utilizing the high-density battery found in the "Pro" model, according to a machine-translated version of the report.
If that is indeed the case, Apple could increase battery capacity without increasing the dimensions of the original iPhone Air. Still, this leaker has a mixed track record with pre-announced product details, so the report would be stronger if backed by another source. The iPhone Air 2 is expected to be unveiled in early 2027, possibly alongside the iPhone 18 and iPhone 18e.
Source: AppleInsider · Summarized by HeadlinesBriefing