The iPhone 5's text message preview feature might be handy in many situations, but it can be downright problematic in others. Imagine being on a first date and receiving an embarrassing text message from your ex-girlfriend or mom. This otherwise helpful feature doesn't just pop up an alert describing the message -- it actually shows a preview of the message itself. If the iPhone is resting securely in your pocket, you're in luck, but if you left it on the table, everyone gets the preview. Hiding these texts will keep the texts for your eyes only.
Unlock your iPhone and tap "Settings" from the home screen.
Tap "Notifications," then "Messages."
Slide the "Show Preview" switch to the Off position.
Disabling the preview only prevents the text message from appearing on the alert; you'll still receive a notice of a message that includes the sender's name. To disable the alert altogether, tap "None" in the Alerts Style box.