"Dial Assistant - Auto Redial" is a free Android app developed by predefault, in the Utilities & Tools category. It is a virtual assistant that helps you redial a phone number automatically and can make the phone auto hang up with a timer. This app is useful for controlling calling time and saving phone money, especially when many telecom companies offer free calling for the first few minutes.

One of its main features is the ability to redial a number automatically. It also allows the user to control the calling time and set a timer to redial. Additionally, the app can access the user's contacts and has a speaker on/off option.

However, it is important to note that the app may not be able to redial promptly when encountering voice mail. Furthermore, some phones with power-saving features may interfere with the app, so users should try to reconfigure or disable power-saving mode.

Overall, "Dial Assistant - Auto Redial" is a useful app that can save users money on phone bills. It is important to test the app on your device to ensure compatibility.