How to disable Lost Mode on my iPhone

Turn off Lost Mode on an iPhone, iPad, or Apple Watch

1. Go to icloud.com/find, then sign in to your Apple Account (if necessary).
2. Select the device below All Devices on the left.
3. Click Lost Mode, click Stop Lost Mode, then click Stop Lost Mode again.

You can also turn off Lost Mode by entering your passcode on the device. If you turned on Stolen Device Protection on your iPhone, you may need to use Face ID or Touch ID.

Simply enter the correct Passcode on the phone and you should be prompted to turn off Lost Mode.

It should open to the passcode screen, where you normally enter your passcode.