Hahahaha. ok 2 ways:

1. ukeyboard

Download it and then go to settings, text input and sellect Ellhnika for 2nd language. Then when you use the virtual keyboard click on the button that looks like a pragraph and select Greek. Ta dialutika einai sta deksia. Dialegeis prtwa ta dialutika kai meta to gramma pou 8eleis na epilekseis.

1. Hardware keyboard

After you install ukeyboard, open the hardware keyboard and hit ctrl + space. Now you should be able to type in Greek. trhen hit the fn then ctrl button for a pop up with additional characters. Ta dialutika einai sthn trith seira apo epanw, trito koumpi apo ta deksia.

Hope this helps file mou!