First of all, you need to enable OAuth via Google following instructions here: https://docs.moodle.org/dev/OAuth2_Services Once configured, log-in with a google account in the site. Once enabled, execute the following curl request curl 'http://localhost/m/stable_master/lib/ajax/service.php' --data-binary ' [{"index":0,"methodname":"tool_mobile_get_public_config","args":{}}] ' | python -m "json.tool" And check that in the response you see Google listed as an identity provider As admin, enable Mobile services Ensure that you are not logged in the site in a new browser (you can use the incognito mode) Using Chrome or Chromium enable the developer tools, and then enable the "Mobile device emulation" tool (is an icon that displays a phone/tablet) then you canselect Iphone or iPad, this will change the user-agent (so it will be easier to test). Point your browser to /admin/tool/mobile/launch.php?service=moodle_mobile_app&passport=abc&oauthsso=ID_OF_YOUR_GOOGLE_ISSUER (see bellow), you should be redirected to the Google authentication, after log in (using the same account that in step 2) you should be redirected back to admin/tool/mobile/launch.php You will see a screen with a link saying "Please, click here if the app does not open automatically", if you inspect the link you must see that points to moodlemobile://token=A_HEX_TOKEN ID_OF_YOUR_GOOGLE_ISSUER is the id of your configuration in the table oauth2_issuer