This phone's os has some serious issues. To turn it off, follow the steps below: Iphone Disconnects From Wifi When Locked Or In Sleep Mode Reset network settings on your iphone. Phone keeps disconnecting from wifi when locked . Go to > setting > battery > power > click on setting icon (on right top) > turn off mobile data when device is locked = never Fix shared mobile hotspot wifi keeps disconnecting in laptop. Go to setting, find the vpn option, and toggle it off if it’s been turned on. You know how sometimes you need to reboot your pc or phone? They have a processor, memory, operating system and little applets they run. You can solve this problem by resetting the iphone network settings. Hello my wifi keeps disconnecting , won't turn back on till i turn off the wifi setting and turn it back on it's a free wifi but protected with username and password this thread is locked. See if you can get the owners to restart it. Fix iphone keep...