App stops downloading on my phone

[Seven Abante]

I have a problem about downloading apps. So when the download starts then i close play store, and for about a minute or so the downloads stops and i got a random error code. Also it happens when screen timed out..i dont know what is happening so i experimented...i downloaded an app and play music at the same time and i
opened a game...for about a less than minute the music stopped then i noticed that my ongoing download also stopped. CAN ANYONE HELP ME AND I APPRECIATE YUR SUPPORT!

 

[B. Diddy]

Welcome to Android Central! Can you tell us your device and Android version?