Apple appears to be working on the second generation of its ultra-thin iPhone Air, aiming to fix the biggest drawback of the original model: battery life. According to supply chain insider Digital Chat Station, the iPhone Air 2 will feature a larger battery to address the frequent complaints about autonomy that surfaced after the first device launched.
The leak suggests the battery capacity will increase from 3149mAh to about 3500mAh, an 11% jump. While that’s not huge for a typical smartphone, in the realm of ultra-thin devices, every millimeter of thickness and every added watt-hour is hard-won. For Apple, that modest bump on paper could translate into a noticeably longer-lasting device in real life.
Ultra-thin smartphones are making a comeback. Samsung is testing its Galaxy S25 Edge in this form factor, and Chinese brands have long experimented with keeping their phones slim while preserving battery life. They often rely on new internal layouts and higher-density batteries to strike the balance. Apple faces an extra challenge: iPhone users expect top-tier battery performance, especially from premium devices, and often quickly notice even small drops in endurance.
So far, this is just a leak; Apple hasn’t confirmed any details. But if the iPhone Air 2 does manage to pack a 3500mAh battery without adding thickness, this could finally solve the original model’s biggest weakness well ahead of the 2026 launch cycle.