I have been playing minecraft on my phone for a while and I know how annoying it is to find a working seed.
This book has got 50 really cool seeds that we have tested and played on our phone.
We even split the seeds into 3 main categories for easy access: landscape, village and resource.
Not to mention there are also lots of pictures in this book to show you how the seed would look like.

In summary, this book offers:

-Tutorial on how to input seed in Minecraft PE
-50 working seeds for Minecraft Phone Edition
-Seeds grouped into 3 categories so that you can choose between landscape, village or resource seeds easily
-Pictures on every seed