North Korea Flag Zipper Lock It is quick, simple and easy way to unlock your phone. This zipper lock app doesn't require any password or pin code to unlock your smartphone. North Korea Flag displays on your lock screen while your phone is locked and you can unzip the flag to unlock your android smartphone. North Korea Flag Zipper Lock is a totally free application for your smartphone. If you are an North Korea Flag lover then you surely wanna decorate your screen with this beautiful North Korea Flag Zipper Lock and show your patriotism. North Korea Flag Zipper Lock is an easy and simple locker made for people who aren't really concerned with screen lock security or passwords.