To reduce the number of scam calls you receive, you can take several effective steps. Here’s a comprehensive guide to help you manage and block these unwanted calls effectively:

1. Use Built-in Features on Your iPhone

- Open the Phone app on your iPhone.
- Go to Settings by tapping on the three dots or the gear icon at the top right.
- Select Phone, then scroll down to Silence Unknown Callers. This feature will send calls from numbers not in your contacts directly to voicemail.

2. Block Specific Numbers

- When you receive a scam call, go to your Recents call list.
- Tap the information icon (i) next to the number you want to block.
- Scroll down and select Block this Caller. This number will be blocked from calling you again.

3. Register on the National Do Not Call Registry

- You can register your phone number for free by calling 1-888-382-1222 or 1-866-290-4236 (TTY). Ensure you call from the number you wish to register – learn more - learn more.

4. Contact Your Service Provider

- Speak with your phone service provider to see if they offer any specific spam-blocking features or apps. Some providers may not enable these features automatically, so you may need to request them – learn more - learn more.

5. Install a Third-Party Call Blocking App

- Consider using call-blocking apps such as RoboKiller, Hiya, or TrueCaller. These apps use advanced technology to identify and block unwanted calls before they reach you – learn more - learn more.

6. Set Up Spam Filters

- Activate spam filtering in your iPhone settings. Go to Settings > Phone > Call Blocking & Identification to enable any apps that support spam filtering.

7. Report Scam Calls to Authorities

- If you continue to receive persistent scam calls, report them to the Federal Trade Commission (FTC) or your local authorities. This helps combat these scams on a larger scale – learn more.

Following these steps should help significantly reduce the number of scam calls you receive. Always be cautious with unknown callers, and avoid sharing personal information over the phone unless you are sure of the caller's identity.