title: Android app can't run in background more than 5 or 15 minutes
body: <p>I know that it is a real problem with running apps in background for different OEMs, but how can I solve this problem?</p>
  <p>My app has a webview integrated from an online radio, everything is ok, but after 5 minutes (in locked screen mode), the player stop playing... I can configure my mobile settings, going to Apps, Special access, Optimize battery usage, search for my app and disable that button, but I win only 10 minutes (15 in total), and the app will stop again...</p>
  <p>I found something about services, but I'm a really beginner, I don't understand why should I use a service to run in foreground... I have also a notification icon (+title+message) which is showing on display even if the mobile screen is locked. For my understandings, that means the app is running in foreground and in background. Can't figure out how to solve this.</p>
  <p>I'm a beginner, but I want to go with this app in production (Google Play), and I want to be useful, not to be just another app...</p>
  <p>I hope somebody will have the patience to respond on my issue. Thank you!</p>
  <p>(At least some advice, what should I do...)</p>