What happens if I dont have a Passcode enabled on my lost Iphone

Is Find My iPhone enabled?

You may use your friends device. Use Find My iPhone app or on any web browser https://www.icloud.com/#find use Apple ID credentials.

• Locate your device or your family members’ devices on a map
• Play a sound on your device to help you find it
• Use Lost Mode to lock and track your device
• Remotely erase all of your personal information from the device
• Protect your device with Activation Lock

Watch this GIF

If you were able to put the device in to Lost Mode, it now has a passcode. Your data is safe and if they erase the device to remove the passcode they will face Activation Lock and not be able to activate the phone again.,