I like this drive. The fact that it works flawlessly with my iphone and the app it requires is great. However, the design of the drive itself isn't helpful to anyone who uses an actual case.
I have to remove my case for it to reach the lightning port. The sides are just too wide and thick for it to connect. I wish that it wasn't the case, because it's an amazing way to transfer files from my pc to my phone, but that just makes it a pain in the butt to use.
Now, with that being said, the drive is large, backs up things I have on my phone and will allow me to take photos from my computer and use them on my phone to post to Instagram. For those reasons, it's still handy to have, even if the outside is less functional than I would like. Id also like to see some sort of keychain attachment.
If you're just using this for a backup though, you'll love it.l