Praise be to Allah the Lord of the Worlds.
The ruling on entering the toilet with the mobile phone, in which there are verses of the Quran or supplications, follows one of the following scenarios: If the verses are put on the screen saver and are seeable, then it is Makrooh (Disliked) to enter the toilet with that phone, because it takes the same ruling that scholars delivered about the things disliked to enter the toilet with; namely things in which Allah or His Messenger is mentioned. The jurists of the four legal schools are agreed to this ruling. Their evidence is that honoring the symbols of God is obligatory and that "Allah’s Messenger (PBUH) used to remove his ring when entering the lavatory." {Related by Tirmithi}. The reason is that the ring bears the inscription of "Muhammad Rasul Allah."
However, if the verses are hidden in that phone and don`t appear on the screen saver or the phone was turned off, then there is nothing wrong with entering the toilet with it. This is because the reason - Illah- (Subjecting the verses of the Holy Quran and the name of Allah to filth) for banning that has been removed. In this situation, the words of the Quran and Allah`s name are mere electronic signals and aren`t considered written words unless they appear on the screen. While inside the phone, they are electronic signals that have nothing to do with the Arabic language.
In any case, an employee must spend official working hours working. During those hours, we advise you to keep remembering Allah with your tongue or in your heart, as doing so doesn`t create any disruption. And Allah The Almighty Knows Best.