Hot answers tagged notifications
Another possibility is using adb: adb shell settings put global heads_up_notifications_enabled 0 (Source)
The problem turns out to be that this option only shows up if the lock screen is set to a PIN / password / etc. If it is set to swipe, it doesn't show up. This is not exactly intuitive but I guess it makes sense at some level.
SMS messages are not normally sent over mobile data. You should automatically receive them, exactly like normal. Even MMS messages typically have their own APN set up so that they can be received without other data services.
I also saw thius notification flashing briefly. As far as I can tell, it is related to connectivity changes (switching from WiFi to mobile and vice versa). For the time being, I've disabled notifications for Play Music but hope they'll issue an update to fix this behavior.
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