the other side of the coin
US /ðɪ ˈʌðər saɪd əv ðə kɔɪn/
UK /ðɪ ˈʌðər saɪd əv ðə kɔɪn/

1.
the opposite aspect of an issue or situation
:
•
While working from home offers flexibility, the other side of the coin is the potential for isolation.
•
He presented his argument, but then I showed him the other side of the coin.