Apps like Truecaller and YouMail automatically process spam calls and your personalized blacklist to reject those calls without the caller noticing. By default, call waiting is enabled on the iPhone, so you’ll receive a call notification if someone else calls while you’re already making a call. You can also go into your phone’s settings and choose Do Not Disturb. Follow the instructions in the How to block a phone number on your iPhone article to learn how to do it.
Follow the instructions in the How to block a phone number on your iPhone article to learn how to do it. All unknown calls are forwarded to voicemail (which isn’t bad as most robocalls don’t leave a message) but also any legitimate calls that aren’t already in your contact list.
Can you silence someone’s calls without blocking them?
For example, if your phone is connected to Bluetooth headphones but you’re not currently using them, the ringtone for all calls will be sent to the device and not to your phone. This silences callers who aren’t in your contacts, sends their calls to voicemail, and lists them in recent calls. Now, your iPhone will continue to ring silently when the specific person calls you, whether the device is in silent mode or not. But that’s just her phone calls. Now you also want to mute their messages and the notifications from those messages.
Nomorobo is an iOS and Android app that provides real-time protection from a growing list of robocallers, telemarketers, and phone fraudsters.