Samsung S9 calls going to voicemail

[Android Central Question]

Why do all calls made to my Samsung Galaxy S9 plus go straight to voicemail if the caller IS NOT IN my contacts? Sprint has been no help

 

[krisqz]

Do you have spam call protection enabled?

 

[Rukbat]

The default if the caller is in or is not in your contacts is to ring the phone until the amount of time set in the voicemail server (figure 5 seconds per ring then add 2). Phones don't automatically send "not in Contacts" calls to VM unless a) the particular phone is capable of it and b) you set it to do that ... or you've installed an app to do it.