Sealed batteries are why I always wanted a thicker phone. Adding an external battery case adds a huge amount of bulk to the phone, whereas adding capacity insid

Sealed batteries are why I always wanted a thicker phone. Adding an external battery case adds a huge amount of bulk to the phone, whereas adding capacity inside the phone adds only moderate bulk. But I'm using an iPhone 7+ and for the first time since my last dumb phone, I have no battery life complaints. So while I'd still add more battery life if given the choice, it's not been an issue for the past 6 months.