Please help: wifi turning off during sleeping or lock-screen

[givarawan]

I have a new Elephone M2. my problem is when the phone in sleeping mode or lock screen the wifi turns off it self.

i have tried: SETTING >>> WIRLESS&NETWORD >>> WLAN >> ADVANCED WLAN >>>> KEEP WLAN ON DURING SLEEP >>> ON.

it is like I didn't change any setting it still turning off the wlan during sleep?!!!!

Is there any other solution ? please help ..... thank you