I loved older phones where you could just pop or slide off the back and replace the battery. So many people carry around portable battery packs to recharge whic

I loved older phones where you could just pop or slide off the back and replace the battery. So many people carry around portable battery packs to recharge which is large, heavy and clunky (you need to hold these two devices while the phone charges). I used to just carry a spare battery and could do a swap for an instant full charge in about the same amount of time it takes most people to get out and plug in their battery pack.