How do I get rid of a pop up?

[AC Question]

how do i get rid of pop up

when i go to internet a pop up appears congratulations your samsung device was selected because we need more testers for the new iPhone 7. It wont go away and wants me to click ok. How do I get rid of it?

 

[Craig Capel]

Re: how do i get rid of pop up

Malware, delete the offending app or factory reset it

 

[VisionFirst]

How do we know what app or malware is the culprit and how to get rid of it for browser block "Congratulations! Your Samsung device was selected because we need more testers for the new IPhone 7" I have a Galaxy Note 4.
Thank you,