All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
If the Quranic verses are apparent, it is impermissible to enter the toilet with a cell phone containing them. Nevertheless, if they are saved in the memory and not apparent, it is permissible to enter the toilet with it, because they are not considered Quran unless they are displayed on the screen.
Allaah Knows best.