Q: MacBook Pro WiFi

Has someone an idea,

why the WiFi-Connection at the same location on my mobile phone (Samsung Galaxy S4) works and on my MacBook Pro 2013 13 not.

If WiFi works on both devices at the same location, my mobile phone WiFi-Connection is more stable and faster than the connection on my MacBook.

I have the same problem in different WiFi-networks.

I have the problem only if I'm sitting not near the router, the Signal Quality on my mobile phone is between Fair and Good