I shared a folder with someone the other day.

when they viewed it on their mobile phone in a browser they had a tough time using it at all.

1. the file names get cut really short and there is no way of seeing entire file names

2. the DOWNLOAD button for each file was completely hidden. you have to first CLICK the file, and even after you CLICK the file, you still dont see the download file. you have to turn your phone in to landscape mode for the download button to show up.

it was a little embarrassing I had to email them the files instead.