Review on HUO ZAO Silicone Cell Phone Credit Card Holder: Black Color - 10 Pack for Apple iPhone, Samsung Galaxy & More by Kyle Armstrong

I have used several different versions of these cards to store business cards on my phone and this is by far the simplest and best sticker product. I've had a few with extras like a top cover for cards or a retractable back to use as an easel or to wrap your fingers and they always get in the way. I've had one of these on my phone for a few months and it's still holding up well. I can easily get 5 or 6 card weight business cards and a credit card sized card in mine.