LG V20 turns off wifi when phone goes to sleep LG V20 WiFi turns off sometime while in sleep mode.  Have to go into settings, Turn on WiFi and Connect to available WiFi when I want to use the phone.
I found other people that have the same problem on other brand phones but answers to the problem do not help me with the problem no matter how I try to apply those answers. My phones settings options are not the same as other brands/models.
Go to WiFi settings and check whether "Keep Wi-Fi on during sleep" is set to always. Hope this helps