Double your iron, gold and diamonds
Place a block of iron gold or diamond in a flat spot step back a little and do the four swipe till you see the a bar on the bottom of the screen where minecraft will show hold minecraft so you close it then go to your home screen. Never press HOME. Open minecraft again and you may spawn in your home so go back to where you put the block of gold iron or diamonds and you may get another block.
Duplicating blocks
You place the block you want to duplicate. (don't pause or place another block)
Click home button.
Click home button twice.
Hold the app till it shakes.(dont delete the app this should only delete the history of what you did before)
Go back on the app and go to the same world.
Collect your block.you should have one on your hotbar and where you placed it.works with any place able block.
Secret Room or Death Way
Dig into a cave make sure you have a painting with you. As soon as you have a room dig in the walls. Have a space with two blocks to walk in after that make a room by digging inside. Then put a door on the 2 blocks then put a painting on it that is 2 blocks then dig 2 blocks next to it ito the secret room then open the door you put now replace blocks and walk through the painting. If you do it on the edge of a cliff have someone walk through and they die.
Double your iron, gold and dia...