I get notification sounds every few minutes

[Cheapster]

Most times there is nothing in the bar at the top of the display.
Music is interrupted every few minutes. Worse, when I play a podcast it is interrupted and paused every 3 seconds by a notification sound.
I also get a new (to me) notification accompanied by the baffling alert: "Spotify is using battery" (What, as opposed to the nuclear-powered mini-generator my phone is plugged into?).
A factory reset has had no effect.

 

[bkdodger]

Welcome to the forum ..I would only install a few apps one by one after factory reset to see which app is causing the issue ..what phone ?