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Историческую версию Call Control можно получить на Android
Будьте в сознании времени, проведенного по телефону во время вызова.
CallControl periodically generates sound beeps, which are heard only on your side, during phone calls.
While active, this program makes a beep sound at the predefined time mark during the phone call.
Use CallControl to make yourself conscious of time spent on phone during call.