Hey folks! I recently got a metal credit card and it just sticks to the back of my iPhone 12. I was wondering if it is safe for the phone and as well as the card to keep it like that when I travel. I would obviously put a cover so the whole thing would be: phone's back + card + cover. I know that I could get a cover which has a place for a card but for reasons I don't want to get into, I'd like to avoid that.
Will keeping the metal card and phone in touch all the time harm either? Take into consideration heating when outside or using the phone. I won't obviously have it like that when I'm charging. Thanks!