Tapping a phone number on Safari Page in iPhone produced message from Switch.com

computerlarry
computerlarry used Ask the Experts™
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The user was visiting the web page for thinkwellgroup.com (which looks to be a pretty amazing company).  They were using a recent model iPhone and were browsing in Safari for the iPhone. They wanted to call for information on behalf of their company, and saw a phone number on the bottom of the home page.

They then had some sort of message from switch.com appear on their Safari screen.  Switch.com is a colocation company.

Should they be worried about iPhone security?  Could there be an issue with a colocated website?

Thanks.
Phone number link on homepage
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Jackie Man IT Manager
Top Expert 2010

Commented:
They then had some sort of message from switch.com appear on their Safari screen.

How did your users saw the above message?
Top Expert 2016
Commented:
href="tel:18183333444">+1 818.333.3444</a></p><p><a href="/cdn

It is trying to open your default telephone application which on this computer is your switch app  on mine it is zoom.

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