Q: I was on internet on chrome and a pop-up told me that I had virus on my phone

There are no known virus for a non jailbroken phone.

Unless your phone is jailbroken there are no viruses. You can ignore it. I suspect it asked you to click on a link?

Crooowd wrote:

 

is this a real pop-up or just an ad from internet

Technically it's both, but you should ignore it either way. Your iPhone can't possibly have a virus unless you've "jailbroken" it in which case anything is possible.

That's an AD from a dodgy or AD rich website. Iphone is pretty much immune to viruses. If you had Android then i would worry. As the other guys said a jail broken iPhone is vulnerable.

Crooowd wrote:

 

It asked me to scan for viruses

This was a scam. Ignore it. If you see this kind of thing again and have trouble dismissing the pop-up, see the information on clearing information from your device in Safari, near the bottom of the page here:

Safari web settings on your iPhone, iPad, or iPod touch - Apple Support