I once had a problem with a new Xiaomi phone where the OS would put the clock app to sleep and the prevent it’s background activity, missed 3 alarms before figuring it out.
I had the same issue, but i was using a third party app because i don’t really like the default one and a year later the problem started, now i am forced to use the default app if i don’t wanna my boss waking me up again
I once had a problem with a new Xiaomi phone where the OS would put the clock app to sleep and the prevent it’s background activity, missed 3 alarms before figuring it out.
I had the same issue, but i was using a third party app because i don’t really like the default one and a year later the problem started, now i am forced to use the default app if i don’t wanna my boss waking me up again
You can disable the optimisations for specific apps, should be under battery settings. At least that did it for me.
I did the day i installed the app, i really don’t know why it stopped working