Welcome to the community!
If you're new to Jira Cloud, I might suggest the Jira Cloud apps for iOS and Android so you can get notified about issues on the go.
Links for the official Jira Mobile apps are here:
Android:
https://play.google.com/store/apps/details?id=com.atlassian.android.jira.core
iOS:
https://itunes.apple.com/au/app/jira-cloud/id1006972087?mt=8
If you have any questions about the apps or Jira in general feel free to post in the community :)
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