Mobile Phones iPhone & iOS How to Approve Your iPhone Approving your Apple device made easy by Jordan Baranowski Writer Jordan Baranowski is a former Lifewire writer and educator with experience writing for SVG, The Nerd Stash, and Feast Magazine. our editorial process Twitter LinkedIn Jordan Baranowski Updated on October 09, 2019 TimeStopper / Getty iPhone & iOS Switching from Android Tweet Share Email Two-factor authentication is becoming more and more important as an extra measure of security. That said, you don't want to become locked out of your device because you've forgotten how to unlock it when you receive the request to approve the device. Here's how to approve an iPhone when you receive this message. What it Means to Approve an iPhone Two-factor authentication is a way to protect your Apple ID from being used if your personal information falls into the wrong hands. If you see a message about approving your iPhone after you've enabled two-factor authentication, it means you've turned on two-factor authentication through your Apple Account. When you turned on your authentication, you enabled a trusted device like your personal cell phone, or maybe a iPad you keep at home. Approve an iPhone From Another Device The simplest way to approve a sign in is by using the verification code that Apple sends to you. Here's what you do after you try to login on a new device: This method will only work if your trusted device runs iOS 9 or OS X El Capitan. If it is older than that, you'll need one of the other methods. Open one of your trusted devices. You should have set these up when you enabled two-factor authentication. A screen will have automatically appeared on your trusted device notifying you of a new sign in attempt. Tap Allow to display a code. On the device you are attempting to login on, input the code displayed on your trusted device. You should now have access. Approve an iPhone Through a Text or Phone Call If you don't have access to a trusted device at the moment, you can also send a verification code as either a text or phone call to a trusted number—these are also set up in the two-factor authentication process. Here's how you receive a text or phone call after trying to sign in on a new device: Tap Didn't Get A Verification Code. You will receive a new prompt. Choose the option to send the code to your trusted phone number. You will receive either a text or phone call on your trusted phone number. Enter the code you see or hear on your new device to complete the sign in process. Use the Settings Menu to Receive a Code Finally, if you don't receive automatic codes and are unable to take a call or text, you can use the Settings menu on your trusted device to generate a code. Here's what you do: This method will work even if your trusted device is offline. Go to Settings > [Your Name] on your trusted device. On older devices, you may have to tap iCloud to find the [Your Name] menu. Tap Password & Security. Finally, select the option that says Get Verification Code. Tap OK when done. Two-factor authentication is important, but don't get locked out in the cold. Make sure to set up your trusted devices when you set up authentication in order to quickly and easily approve any new devices.