iPhone 4 had a (flush) depth of 9.3 mm. Iphone 12 tech specs says it has a depth of 7.44 mm. It's unclear if that includes the camera bump, but I'm going to to

iPhone 4 had a (flush) depth of 9.3 mm. Iphone 12 tech specs says it has a depth of 7.44 mm. It's unclear if that includes the camera bump, but I'm going to to asssume it doesn't, because Apple. Yeah. That extra 1.86 mm would probably add quite a lot of battery capacity, like 20-35% more.