Dropping your iPhone may crack it, but the most likely way to ruin the screen is to scratch it. You might drop your iPhone into your bag and let it rattle around with your keys. You may absent-mindedly slip some change into your dedicated iPhone pants pocket. Or your significant other might pick up your week-old iPhone and a nail file in the same hand, gouging the screen so badly that the scratches are all you’ll ever see from then on.
To prevent this, you should get an iPhone screen protector. Here are the best you can buy.