To view markers for each issue you need to open issue and click on Google Maps for Jira icon
7. Gadget for Jira Dashboard
You can create Gadget and monitor data on Jira Dashboard. Read more here.
8. View markers via Jira Mobile Apps.
Google Maps for Jira data is now available on mobile apps for Jira. It means that users can view geo markers that have been added before on the Google Map via mobile devices. Read more here.