4 ms·
Most Android phones let you turn off mobile data and Wi-Fi while the screen is off. Something similar might be at play, since FCM is pretty reliable, even with
by maven29 6y ago
Most Android phones let you turn off mobile data and Wi-Fi while the screen is off. Something similar might be at play, since FCM is pretty reliable, even with the most brutal doze parameters and additional power optimization measures imposed by manufacturers.
- jakub_g 6y agoAFAIU each Android manufacturer has their own ad-hoc battery optimizations and opts-in most apps to it by default and users need to opt out. It's a wild west. I think stuff might work for a while when screen is off but if the phone lies idle for hours, apps get killed etc. and the phone checks for notifs only once in a long while.