AlarmManager not working in several devices

Question

My app uses AlarmManager and it has been working since 4 years ago. But I noticed it started failing in some devices.

I\'m pretty sure code is right (I\'m using Wak

Answer 1

The issue is Smart Manager. Samsung has a battery manager which at times disables certain apps from running in background. It tried to "resume" when going back to the app but completely disables the application or may resume every 5 mins or so (depending how Samsung has it).

This would work on stock versions of android as there is no Samsung Manager. You can also install custom version of android which has some features to enable SM (depending on the rom).