I actually haven't had my card reader long enough to have used it yet, I have been satisfied with the service I've received, quick responses & knowledgeable staff.

One thing I was disappointed about was the card reader doesn't connect while I have my Otter Box case on my iPhone. Since having cases are pretty common with this phone, I would've liked a solution to that before I received my reader. I'll have to remove my case each time I use it, or buy an extender which is about $30.