On Android, when a new message is received, a notification appears in the sliding panel showing the user the number and contents of the new message. While this is a handy way of displaying the message, it does not give you the immediacy of the iPhone’s pop-up notifications. Instead, you have to slide the panel down, click on the message, wait for the Messaging app to launch, and then type in your reply. There are a number of apps in the Android market that help to shorten this process by displaying the SMS as soon as it appears and allowing you to immediately respond to it. SMS Popup is one of them.