Disoriented patients gambling on their cell phones

Ran into this ethical dilemma recently. A patient on our floor was oriented to everything besides place, had some expressive aphasia and was forgetful. Apparently he was gambling on draftkings throughout the day and the patient’s friends wanted us to take away his phone because he was making crazy bets. The charge nurses ultimately said that if his MPOA wants to take his phone that’s their business, but the hospital staff isn’t allowed to deprive patients of personal property unless they’re calling 911 or using it to abuse the staff. What is your hospital’s policy on this if you’ve dealt with this before?