I found the board really very nice but I' not succeeding to connect to WiFi. I tried to switch from my home network to my iPhone hotspot but the results seem to be the same. I'm us...

I found the board really very nice but I' not succeeding to connect to WiFi. I tried to switch from my home network to my iPhone hotspot but the results seem to be the same. I'm using the mini-usb power, any hint of possible problems?
Could someone describe exactly the way in which I should connect. Maybe I'm doing something wrong...