Sharing Webroot Secure Anywhere with my smartphone

I have Webroot Secure Anywhere for my laptop, and I should be able to also use it on my Android Smartphone.  How do I do that?  I found several apps, but which one do I choose?  I recently got a threat that said I needed to click on an upgrade or my battery would die.  I didn't do it, but now I'm worried that I should do something to protect my cell.
Thank you,
Lynda