Auto Hang Up

[Main function]

- Call termination be the lock screen by pressing the power button.

- Call if continued beyond the time that has been set, call termination.

- The end call option by the transmission / reception.

- Possible extension of currency using the alert window to the call at the end of the time limit.

[The main purpose]

- Prevent a long time in advance calls that are not pressed the end button after call

- Fee prevention of those who are not familiar with the smartphone, such as children and the elderly