I found my iPhone after I have indicated it was lost. How do I unblock the phone

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

When you find your lost device, do either of the following to turn off Lost Mode:

• Enter your passcode on the device.
• In Find My iPhone on iCloud.com, click All Devices, then select the device that is in Lost Mode. Click Lost Mode, click Stop Lost Mode and then click Stop Lost Mode again.

Note: If you had any cards suspended when you put your device in Lost Mode (credit or debit cards for Apple Pay, student ID cards or Express Travel cards), when you turn off Lost Mode and sign back into iCloud, you can use them again.