Send a Voice Message or SMS to your friends when you run out of money. Let them call you back!
Have you ever been in a situation when your mobile phone ran out of money, and you can no longer make a crucial call/SMS?
When that happens, use this extension to send a Voice/SMS message to your friends or family. Let them call back (assuming incoming calls are free)!
NOTE: You need a Hoiio developer account to work. Get it from http://developer.hoiio.com