[tushar_kp]

My phone is always connected to wifi in my room. When I go out of its range, it gets disconnected as expected. But when I come back, my phone doesn't get connected to wifi until I unlock my phone. Is this any bug or is this normal in Windows Phones?

[ven07]

Go to Settings > Wifi (or just use the toggle in Notification Center to jump there) > manage > tick the box that say keep wifi on when screen times out

[tushar_kp]

There is no such option

[Benny Wydooghe]

There is no such option

I am having exactly the same issue on a Lumia 640, running Windows Mobile 10. Did you found any solution?

Thanks.

[Shashank Makkar]

that option to keep wifi connected under locked screen was in windows phone 8. starting from 8.1 wifi wont turn off under lock screen. as for why it doesnt connect automatically to your wifi when you are back in range....you could ask this in windows 10 forums