Phone ← Knowledge Base Moving to another server... Does my device provide the video call function? How do I set a ringtone? During a call, why does the screen turn dim or off? How do I remove the call background effects? Why can't I hide my number? During an active call, how do I get back to the call screen after doing some other operation on the device? When I record a call, does it record my call with the person on the other line? Why can't I merge calls? What is Home dialing? What does the mute button do during a call? What is ASUS Phone? How do I set a data usage limit? What does the call on hold button do? Can I set up the auto-call rejection message? Can I talk to a specific contact privately during a conference call? What is Fixed Dialing Numbers (FDN)? Why can't I receive the second call? What are Block list and White list? Can I access the Internet after Mobile Data is enabled? Does the Airplane mode turn off Bluetooth? Why can I still receive calls even when Do not disturb is enabled?