Chosen Solution
tell me why and how to fix it
Hi @victorrocks247 , Check the WiFi Advanced settings of Keep WiFi on during sleep is set to Always and also that 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.
The connection is poor. That is the reason for disconnecting. To fix this, change setting according to your connection on Wi-Fi Advanced settings on your phone.