How to warp fields
When you find a new "Holy Grail Tablet", make sure to scan it.
* Otherwise it is not recorded as a warp point.
Open pause menu and select "Holy Grail", then warp menu shows up.
Select a field and press confirm button.
If you get a certain app and install it, you can warp to "Holy Grail Tablet" which is not recorded on regular Holy Grail list.
Press down to switch Holy Grail lists.