What's a fast reliable way to transfer a large # of files between phones?

[Sheep]

I use SENDANYWHERE for my stuff. Also works sending to and from an iDevice to Android and vice-versa.

Same here. SendAnywhere also works from Android to/from Android and Windows 10 to/from Android which covers every use case I have.

 

[udenyyp]

I am using Dropbox for syncing files between my phones.