[Android Central Question]

Hi all, recently I've been running into a really weird problem.
Whenever my father's J3 2016 screen is off - it cuts the internet connection momentarily.
I don't know if this is directly related to screen, but, if phone is sleeping (10 seconds, 30 or 1 minute doesn't matter), you don't receive notifications until you wake it up.
When you're in call (messenger, viber, etc) when screen goes off (by proximity sensor) the network quality is poor, and you stop hearing the person, until you wake the screen and call is resumed.

What this could be and how this could be fixed? Any solutions?

[SpookDroid]

If this is on WiFi make sure that the setting to keep the network 'alive' during standby is active.