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  • You have provided virtually no detail - what does sudo iwlist wlan0 scan show? Commented Apr 6, 2020 at 0:09
  • is the wifi access point in the laptop 2.4GHz? See, the pi4 can do 2.4GHz or 5GHz - any pi other than the 4 or 3+ can only do 2.4GHz Commented Apr 6, 2020 at 3:50
  • The wifi access point in 2.412GHz...There is no differences between doing sudo iwlist wlan0 scan on both pi. Commented Apr 6, 2020 at 9:52
  • I have found a sort of solution with this link raspberrypi.stackexchange.com/questions/81812/… where I can ssh to my pi zero with my pi 4, and connect it to the laptop with wpa_cli -i wlan0 select_network #. But I thought there was a solution where the pi connect automatically to the prioritised and strongest network...does this exist ? (It doesn't seem to work anymore with the pi 4...don't understand why) Commented Apr 6, 2020 at 9:57
  • The 'auto selection' of network only work for the pi-4 when I add scan_ssid=1...which won't work with the pi-zero... Commented Apr 6, 2020 at 10:12