How to Connect to Wi-Fi Without Password

You can access wifi network without password even if it is secure, if you can reach the router and press the button WPS on the router then in your smartphone go to setting > network , and search for ' WPS connection' , (depending on your phone manufacturer) example for hwawei phone work with Android 8

Chose WI-FI

Advanced Wi-Fi

Settings 

WPS connection 

Few seconds and it's done 

This step may not be the same for all the smart phones depend on the model and the manufacturer of the device.

Some router needs from you contenu pressing on the WPS button to the end of the operation (this gonna take few seconds )