Comment by Etheryte

My theory is that this will only ever happen if battery technology improves enough that they can get the same battery life as current flagship models, but in that smaller form factor. People may say they don't care about battery life or charging, but if a year or two in you have to charge every night, it is an inconvenience, even if not front and center. I suspect this is one of the main reasons they don't want to do that right now, they don't want to create this image of oh damn, my Apple device is out of battery again.