Help!

I know this is the Oculus forum and not Samsung, but I'm sure many of you guys are on the sub for the content and are using Samsung phones too...

So i just bought a Galaxy S7 with 32gb internal storage and an external 128gb card. My thinking was I can store all of my VR (ahem) movies on the external card, as most of them are 6 to 8gb each.. However, I have just read that VR movies must be stored on the phone itself, and are not playable through Samsung Vr player (MilkVR) from the external card.. ? is this really true?

This would mean my VR files must be stored on the phone itself, which is a ridiculously small space to use (especially when i have an empty 128gb card) and also - Android File Transfer (transferring files from Mac to the phone) does not allow the transfer of file sizes larger than 4gb..... so how the hell am I supposed to watch my videos VR movies?? Any help?