Settings > accessibility > guided entry > activate. Now return one tab and click on Accessibility shortcut > verify guided entry. Now if you’re within the recreation, triple click on your property button, click on possibility on the underside left and activate movement, keyboard and contact. Now begin guided entry. This can lock your cellphone to the app or recreation that you’re presently in and you can not exit however will will let you use your contact display. To finish guided entry, triple click on the house button and click on finish.
Edit: energy button, not house button