Don't worry about using the 'jump' button to get over single blocks as you will auto-jump them. Just use the 'jump' button when you really need it.
You can create otherworldly designs that float in the air as gravity doesn't affect blocks as long as they are attached to another one.
If you craft a book shelf and destroy it you will get three book shelves out of one.
If you find your device is slowing down, switch off "visual effects" under "options", it will help on the performance
Make somebody join your local server, and place the items u want to Duplicat in their hot bar, then press the home button on your Iphone (while your friend or the person who joined u is still connected) then open another app untill the person who joins u disconnects. Then go back on the alredy opened minecraft and let them join you again everything in the hot bar should be 99+.
Requires: 1 Chest and 1 (Item You Want To Duplicate)
If You Want To Duplicate A Item In A Multiplier World but don't want to quit out here is how: Get A Chest Put A Item In The Chest (Only Item)
Your Inventory has to be empty so does the chest, Make The Other Person Go In The Chest If You Press At The Same Time You Will Get Double!
Single player: Put Two Different Items in a chest e.g. Dirt and Diamond Press Them Both At The Same Time The First Item In The Chest You Will Get Two Of.