Wi-Fi issue with MacOS X El Capitan I have a MacBook Pro with retina display model A1502. I updated it to MacOS X El Capitan.
The Wi-Fi connection is still not working.
It works for sleep mode.

I followed this answer Wifi Keeps Dropping Macbook Pro 13in Retina Early 2015 but it is not working for me.
Exact the same issue.
Only my MBP with El Capitan could not connect to wifi (always turn off and turn on to work for seconds), but just at home, not at office.
I fixed with a firmware update of the router and access point (fritz!box), I also changed wifi radio channel and set wifi standard to n+g+b.