How can I make my Huawei P9 stop connecting to open WIFI networks?

[Android Central Question]

Whenever I am in the street and there is hotspot of some company (T-mobile, etc), my Wifi connects to it. Of course, i have to login to that WLAN to have internet, so i just end up turning my WIFI off and use my 4g. Then, I get back home, forget to put on again WIFI and start surfing on my 4g...

Is anything like "ask before joining" or anything like that on Huawei P9? Could not find it.

 

[PapaGary]

Settings>Network & Internet>Wi-Fi>(scroll down)>Wi-Fi Preferences>Connect to open networks (switch it to off).