Client: Viettel Mobile

Requirements: Viettel Mobile unveiled a service named “Call me back”, allowing subscibers to send a requesting message to another subsciber to call back even if the sender account was insufficient.

Solution: The idea popped up when I was reading a piece of news on VnExpress. The news told a story about a survival after he has been missing at sea for 22 days. He was forced to turn off his cell to save battery in order to send distress message if he was to arrive within signal-coverage areas. However, what if his account is then empty? The name of this advertisement is: “This is a completely true story”. Here is the news on VnExpress: http://vnexpress.net/GL/Vi-tinh/2006/05/3B9E9AA2/.
For further references: http://blog.360.yahoo.com/blog-WWnhkp86c6ehXJfNvhcwztrjJL5GtA--?cq=1&p=321