When out on the road, a low battery on a smartphone is never a good thing. But fear not, with Last Message, this Android app will make sure that a contact knows they aren't being ignored. Created by Android app developer Fat Brain, Last Message literally sends the last message. This customizable solution will notify the chosen contact(s) through Twitter, Facebook, email or SMS to let them know that the phone battery is low and the phone will be shutting. The message can be personalized to say whatever is necessary, and the user can choose at what battery percentage to send the message. Last Message also includes additional information about the battery, measures its temperature and usage. If a charger is available, a start and stop time can be set to refrain the app from sending messages. This free app requires Android 2.2 or higher.