Whether you received a QR code for a coupon, movie tickets or whatever, it's a lot easier to retrieve that QR code than you might think. If you wait to find the code when you are trying to redeem it, it takes a bit to find the email, click and then navigate to their site to see the code. Or maybe you have to open the correct app to find your QR coupon. If you take just a second to make a screenshot of the QR code you can find it easily in your Gallery app. Here's a quick background of QR codes, the buttons you need to press to grab a screenshot and finding your QR code later.

For complete instructions and a walkthrough
watch the video below