Works very well and fairly quickly. I tested it with Samsung Note 5 by dragging in pictures from my phone, disconnected and reconnected to check and where pictures are. I downloaded a photo of him to my phone and everything worked. I deleted the pictures from the phone and plugged it back in and downloaded the pictures from it to the phone and everything works. For reference, I have the largest storage and have uploaded about 400 photos to it in almost the entire life of the phone. That's great. Good thing I have two, one for mom and one for dad, that's very handy!
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