Hello Card Dialer for Du is a free Android application designed for users of Hello Card and Five Card services. This app simplifies the calling process to various countries, including India, Pakistan, Bangladesh, and more, without needing an internet connection. Users can directly call their contacts by entering mobile numbers or selecting from their favorites. Key features include a call screen for direct dialing, a favorites screen for easy access to preferred contacts, and a history screen to track past calls.

The app also provides an easy setup process where users select their card provider, input their card number, and choose their preferred language and country. Privacy is prioritized as the card number is stored securely on the device. The application supports normal phone calls using toll-free numbers, making it a convenient tool for international communication from the UAE.