The Copper Underwear may work for her, but my problem is related and more difficult.
I sometimes become ill after reviewing the phone bill each month!
I used to use a cheapo $10/month dumb phone; worked well!
But our daughter bought us SMARTphones.
Seldom use it, but last year the rear derailleur broke off miles from nowhere.
Yes I could have shortened the chain ($$) and made it.
The phone kept my hands clean!