Safari locked for security reasons
I got a pop up that says
"Your apple device has been locked for security reasons. You are advised to call the number the helpline number +1-800-457-5916 as soon as possible. Please do not use your device it may lead to stealing of data, contacts and personal information.
Kindly speak to the customer care representative in order to get this resolved. Call Support for Apple now on +1-800-457-5916"
Is this a legit thing or is someone trying to hack my phone?
iPhone 4S