How to use android phone as SD card reader? I want to format my external SD card (For installing Raspbian) and I don't have a SD card reader on my PC or an external one. Is there a way to use my Android phone as a SD card reader?

PC OS: Windows 7

Phone: Rooted Note 3 (N9005)
I believe there is. I use Nexus Media Importer (though I think it works on most phones with OTG) and it works as a basic file explorer.

https://play.google.com/store/apps/details?id=com.homeysoft.nexususb.importer

There is a free version, but I can't remember what the limitations are. (I have a feeling it might just be pictures.)