Banners are an official feature for the PC version of Minecraft. This addon implements some of banner functionalities to Minecraft Pocket Edition but it’s much more limited and works more just as a concept. It’s useful if you’ve never experienced banners in Minecraft and want to see what it’s like. Let’s hope that Pocket Edition gets banners as an official feature soon!
How does it work?
Use a shulker spawn egg to spawn a white banner. Hold any of the dyes and long press on the shadow of the banner to change the banner design.
This addon is much more limited than the original features for PC. For example, here you are limited to just preset designs whereas on PC you can make much more customization.