If you lose your phone, you might be able to access your account from a trusted computer without needing a code. We recommend that you make this a trusted computer only if you trust the people who have access to it.
You'll only be asked for a code whenever you sign in using your account from an untrusted computer or device.
If you lose your phone, you can always change it in account settings.Confirm
If you lose your phone, signing in from a trusted computer will be the easiest way to get back into your Google Account.
If you choose not to trust this computer, we strongly recommend you add backup options so you can get codes if you lose your phone. Follow the instructions shown after setup to add backup options.