Mobile Phones iPhone & iOS Using iPhone Phone Features Like Caller ID and Call Waiting Use the dialer or your iPhone's settings to configure core phone features By Sam Costello Writer Sam Costello has been writing about tech since 2000. His writing has appeared in publications such as CNN.com, PC World, InfoWord, and many others. our editorial process Facebook Twitter Sam Costello Updated January 25, 2020 Caiaimage / Tom Merton / OJO+ / Getty Images iPhone & iOS Switching from Android Tweet Share Email The iOS's built-in Phone app offers a lot more than the basic ability to place calls and listen to voicemails. There are a lot of powerful options hidden within the app if you know where to find them, such as the ability to forward your calls to another phone number and control some aspects of your calling experience. Instructions in this article apply to iOS 9 through iOS 13. How to Access Phone Settings on iOS To modify most of these capabilities, you'll work from the Phone settings screen. To access it, tap Settings > Phone. That screen governs all the device-specific settings that govern your phone's voice dialer. How to Turn Off Caller ID on iPhone The iPhone's Caller ID feature is what lets the person you're calling know it's you; it's what pops your name or number up on their phone's screen. To block Caller ID, change its setting. AT&T and T-Mobile From the Phone settings screen, scroll down to Show My Caller ID and tap it. Move the slider to Off/white and your calls will come from "Unknown" or "Blocked" instead of your name or number. How to Block a Number on iPhone Verizon and Sprint Dial *67 then the number you're trying to call. This prefix code works on a per-call basis. To block Caller ID for all calls, you must work through Verizon or Sprint directly through your online account. How to Enable Call Forwarding on iPhone If you're going to be away from your phone but still need to get calls, turn on call forwarding. With this feature, any calls to your phone number are automatically sent to another number that you specify. Not necessarily a feature you'll use too often, but very handy when you need it. AT&T and T-Mobile From the Phone settings screen, scroll to Call Forwarding and tap it. Move the slider to On/green then enter the phone number you want to forward calls to and tap the Call Forwarding arrow in the top left corner. You'll know Call Forwarding is turned on by the icon of a phone with an arrow coming out of it in the top left corner. Call forwarding stays turned on until you turn it off and let calls come directly to your phone again. Verizon and Sprint Dial *72 then the forwarding number. Press Call and wait to hear the confirmation. At that point, you can hang up. The forwarding stays in place until you turn it off by dialing *73. How to Enable Call Waiting on iPhone Call waiting allows someone to call you while you're already on another call. With it turned on, you can put one call on hold and take the other, or merge the calls into a conference. When call waiting is turned off, any calls you get while on another call go directly to voicemail. AT&T and T-Mobile From the Phone settings screen, scroll to Call Waiting and tap it. Move the slider to Off/white. Verizon and Sprint Dial *70 then the number. For the duration of that call only, your call-waiting service temporarily suspends. How to Make Your iPhone Announce Incoming Calls In many cases, it's easy enough to look at your iPhone's screen to see who's calling, but in some cases—if you're driving, for example—it might not be safe. The Announce Calls feature makes your phone speak the name of the caller, as long as the person's number is stored in your Contacts app, so you don't have to take your eyes off what you're doing. This feature is not carrier-specific. To configure it, from the Phone settings screen tap Announce Calls. Choose whether to Always announce calls, only when your phone is connected to Headphones & Car, Headphones only, or Never.