So I just finished updating my phone from Android 6 to 7.
Before downloading the update, I had two point something GB of free internal storage space.
The update was one point something GB of size, and I expected to get about as much back after the update was concluded.
Except, I have now - even after updating all my apps - five point something GB of internal storage available ... and no, I don't think I'm missing any apps (nor personal files, since I'm in the habit of storing as much as possible [read: everything] on my external SD card).
I'm certainly not complaining, but I'm curious. What's the (most likely) data that's been deleted? Is it really possible that Android 7 is that much more efficient?