if you see anything on the Internet, including pop up ads, about being chosen to be one of the few people to get early access to the iPhone 7 for testing purposes, it's a scam. There's no such testing program that gives away free iPhones.
Here's a screenshot of one such site. Notice how it's made to look almost exactly like an official Apple web page. The biggest give away is the non apple website address used to get there, which I've obscured for safety reasons.
Here's a screenshot of one such site. Notice how it's made to look almost exactly like an official Apple web page. The biggest give away is the non apple website address used to get there, which I've obscured for safety reasons.