[jobtemp]

There are phone apps that can pierce through all silent or DND settings. Get one of those. If the same app could buzz on less than 50% battery to remind to charge that would help. Also same app could request to confirm on call status so the don't forget. If they don't confirm someone else gets the shift.

[Geezus_42]

OpsGenie has that. We use it at my job. I'm not sure what problem OP is having. The phone call, text message, and app alert from OpsGenie are more than enough. The notification configuration is extremely flexible and each user can customize it as needed. From a user perspective, I don't know what else you could want.

I have no affiliation with OpsGenie outside of using at work.

[lars_francke]

We have OnePlus users with issues: https://support.atlassian.com/opsgenie-android/docs/troubles...

And we have one user with another brand that also locks down the notification/alert settings and kills apps in attempt "to save battery" which can't be controlled.