Hi @victorrocks247 ,
Check the WiFi Advanced settings of ''Keep WiFi on during sleep'' is set to ''Always'' and also check if the ''WiFi optimization'' setting is enabled.
To find the settings go to ''Apps > Settings > Wireless and Networks > WiFi >'' tap right hand soft key below screen and select ''Advanced''.
Scroll down and tap on the ''Keep WiFi on during sleep'' entry and select ''Always.''
Scroll down to the ''WiFi optimization'' setting and select the checkbox.