If your phone number has changed, you’re going to want to update it on Instagram so you can always access your account properly. You can do this by accessing your personal information from your profile settings and/or your security settings from your account settings.
How to Change Your Phone Number on Instagram for Logging In
Follow these steps to change your phone number in your personal information settings so you can use it to log into your account. You can do this from the mobile app for iOS/Android as well as from Instagram.com on the web.
While logged into your Instagram account, access your profile by tapping your profile icon in the bottom menu (mobile app) or selecting your profile icon in the top right corner of the screen (web) and selecting Profile from the dropdown list. Select Edit Profile. Look for the Phone or Phone Number field with your old phone number in it, then delete it and type your new phone number in its place. Tap Done in the top right (mobile app) or select the blue Submit button (web). Do you have a Business account? You can display a different business-related phone number from the one used in your personal settings to display in your profile’s contact information. Select Edit Profile from your business profile > Contact Options > Business phone number and type your business number into the given field. Select Done to save it.
How to Change Your Phone Number on Instagram for Two-Factor Authentication
Although you can disable and enable two-factor authentication both from the mobile app and from the web, you can only change your phone number used for two-factor authentication via the mobile app. If you change it, it will automatically update the phone number you have in your personal information (used for logging in).
While signed into your Instagram account, tap the menu icon in the top right corner followed by Settings. Tap Security. Tap Two-Factor Authentication. Tap ON beside Text Message. Tap Text Message. Delete your current phone number in the given field and type your new one in the field to replace it. Tap Next. Instagram will send a code via text message to the new phone number you entered to confirm the change. Once you receive the code, enter it into the given field and tap Next. Optionally save the given recovery codes and tap Next and then Done to complete the process.
