You never know until you see this. Your big screen smartphone has negative side effect. Guess what is that? It ruins your fingers because you keep holding your big smartphone in palm without changing direction.
Check out the direction why it can ruin your fingers
Is that how you hold your mobile phone?
Then bruise/dent on your pinky finger
Is that too late?
If you have this kind of habit, please doing it now. Your pinking finger might look better than this in the next year.