Hello Rabbi, Thank you for taking the time to answer my questions. If i have touched my scalp and then my phone screen, should i wash my phone before using it to pray, just as one washes their hands before praying in the event they have touched their scalp? Additionally, if i have studied Torah without washing my hands and phone, must I study it over again? Best, Sophia

Shalom There is no need to wash the telephone as the impurity does not transfer to the phone or to anything else touched, such as a prayer book. Kol tuv