Found iPhone 5s!!?

So i found and iPhone 5s and i connected it to iTunes and restored it. So i was on the screen where it says hello and language wifi all that. After all that a message showed up saying "Message from the owner- this phone is reported lost please call" and she left her number there. Does this mean the... show more So i found and iPhone 5s and i connected it to iTunes and restored it. So i was on the screen where it says hello and language wifi all that. After all that a message showed up saying "Message from the owner- this phone is reported lost please call" and she left her number there. Does this mean the phone's serial or imli is reported lost. and nothing can be done with it?
Update: When i take the sim card out the message doesn't appear.
Update 2: *IMEI
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