Installing Phalcon 3 on PHP 7

I'm working on a new server to test updating some sites to PHP 7 and Phalcon 3. Installs look good but adding phalcon.so to php.ini doesn't seem to add anything to the phpinfo(). Is this a common problem with the install or am I missing something?

Thanks, Ben

edited Aug '16

Confirm that you can actually locate phalcon.so binary in your PHP API path.

For PHP7, it should be: extension_dir => /usr/lib/php/20151012

Else, provide your full setup (web server, OS, SAPI used..).