I had over 2 GB of data I wanted to download from my phone. Instead of just downloading each file, file-by-file, I had to wait for AirDroid to compress files that were already highly compressed (photos and videos). Personally I don't see the point of creating this intermediate archive file even if the files were not highly compressed. Why not just download the files one after the other? Surely it's way more time efficient, especially over a LAN? Also, what if a device is almost out of space? Wouldn't there be a possibility for the intermediate archive file to run out of space?