According to multiple sources within the supply chain, Apple's inaugural foldable iPhone is currently undergoing internal testing, featuring a battery with a capacity ranging from 5400mAh to 5800mAh. The version destined for mass production will boast a battery of no less than 5400mAh, surpassing the 5088mAh capacity found in the iPhone 17 Pro Max. This will make it the Apple mobile device with the highest battery capacity ever produced.
