Wi-Fi keeps shutting off.. HELP!! topic

Alright I have my non-rooted M8 on Sprint. Lately the Wi-Fi is on but it says all my saved connections are not in range. I toggle Wi-Fi on and off and no go. I need to completely reboot my phone to fix this issue. This at least happens three or four times day

Sent From My HTC M8 Harmon Kardon