Phone Numbers in my iPhone Look Weird
Well, so my dad gave me an old iPhone 4S after I broke my iPhone 5 and everything's fine, just I noticed that when I tried to add a number to a contact, it looks kinda weird.. Instead of looking like this, 123-456-7890, it looks like this, 12-34567890. I don't know what's wrong, or how I can fix it. Can anyone help me? Thanks!
iPhone 4S, iOS 9.3.1