See when a message was sent
Within the Messages app, you'll be able to swipe from right to left to reveal the timestamps of each individual message.
Normally you'll be able to see what date and at what time the first message was sent. However, to reveal each individual message after that, you'll need to quickly glance at the timestamps by swiping.
This can be useful to either know what time the last message was received at, or to see if your friend was lying about arriving on time