Did you know that the iPhone has a hidden feature that lets you quickly redial the last phone number you called? Instead of scrolling through your contact list to find the number again, you can bring it up instantly using the manual dialer.

Here’s how it works: Open the Phone app on your iPhone, go to the manual dialer, and simply tap the green call button without entering any numbers. The first tap will automatically paste the last number you called or dialed into the number entry. If you tap the call button again, you’ll call that number.

In comparison to scrolling through your contact list and selecting the number, this method only requires three quick taps: open the dialer, tap the call button, and tap it again. This is especially useful if you have a lengthy contacts list. Just make sure to double-check the number before redialing, especially if you’ve been making multiple calls.

Additionally, if you use Siri on your iPhone, you can also redial a number quickly using a voice command. Activate Siri and say “redial that last number” to immediately call the most recent number you dialed. Similarly, if you want to quickly call back a number that called you, say “return my last call.”