I had a 64GB microSD card that was doing nothing more than sitting since the LG G2 does not have a microSD slot. I picked up a small OTG reader and now I have almost 90GB of storage! Really nice design, micro USB OTG on one end and standard USB on the other to use with a computer.
2-in-1 USB MicroSD OTG
About $3 shipped, reads 64GB cards (specifically SanDisk Ultra 64GB XC1 class), was seeing 30MB/second reads and 10MB/second writes from the computer. The phone has no problem reading the card and there is a headphone plug to keep the reader attached to the phone. It does seem a little flimsy, but for its size and cost I am still very pleased.
2-in-1 USB MicroSD OTG
About $3 shipped, reads 64GB cards (specifically SanDisk Ultra 64GB XC1 class), was seeing 30MB/second reads and 10MB/second writes from the computer. The phone has no problem reading the card and there is a headphone plug to keep the reader attached to the phone. It does seem a little flimsy, but for its size and cost I am still very pleased.