What is what does it mean when a phone rings twice and goes to voicemail?

When a phone rings twice and goes straight to voicemail, it generally means that the recipient's phone is either turned off or on airplane mode, or they are on another call and have call waiting turned off. Another possibility is that the incoming call is from a blocked number, and the recipient's phone is set to automatically reject such calls. Alternatively, if the phone rings a few times before going to voicemail, it could be because the recipient's phone is out of range of a tower or in an area with poor network coverage.