The phone just went silent while on the caller side it kept ringing. Maybe this was caused by the conflict in my rules or possibly ProfileMatic conflict with other program, I'm not quite certain. But I can confirm that such silent behavior toward the incoming call was gone once I remove all rules and uninstall ProfileMatic. Here are the 3 rules I added. 1. Home: All days 7:00-22:00, with cell id & WLAN SET (I also tried with only WLAN, it behaves the same), FB-Gtalk-Skype all OFF, power safe is OFF. 2. Outside: All days, 7:00-22:00, cell id NOT SET, WLAN NOT SET, only FB ON, power safe is OFF. 3. Night: All days, 22:00-7:00, cell id NOT SET, WLAN NOT SET, FB-GTalk-Skype all OFF, power safe is ON. To my understanding, I also think that ProfileMatic rules should not block the incoming calls. But it happens and I really have no clue what is the cause of such behavior.