How do you permanently display a time stamp for each and every text message?

How do you permanently display the time stamp above each and every test message. I have had an iPhone 3, 4, 4s and now the iPhone 5 and each one of these phones displayed the time stamp above the text message which has been very useful to me. When I updated my iPhone 5 to os 7.0.2 this useful feature disappeared. Yes, I know you can swipe your finger left to right, that's useless for me. I must me able to see the time stamps at a quick glance on every text message that is sent or received. I am quite often required to take screen shots of text conversations and the time stamp must be there. If this is not possible haw do I return to the previous operating system?