Bees who have dropped their precious phones in water & revived them in a bag of rice, how long did you leave them in there?

DH dropped him phone in the tub this morning when trying to get him & P out (totally didn't listen to me but whatevs). Anyhoo the music stopped playing immediately but the phone was still on... he was able to get it turned off & it's not sitting in a tupperware of rice (we of course just ran out of bags).

The page I read said 36 hrs.... is that right?