Hacked, possibly - has anyone seen this message before? This afternoon, the touch screen of my phone became unresponsive. I tried to restart the phone but it would not. So I went on and deleted find my iphone profile because it stopped the phone from restarting. As soon that was done, my phone restarted itself. Then I saw the following message on my phone:



Has anyone had this problem before. What's the cause of it?

P.S. I have since reset my phone and changed my iCloud password just in case.
From the picture it looks like someone placed your device in lost mode. When a device is placed in lost mode you have the option to display a message and a phone number on the lock screen. 

When you erased the device and signed back in with your Apple ID this would turn off lost mode for the device.