@jmpratt I don't think so, because the pin is hardwired to the antenna switch internally. This has been a problem for us, too. I would advise against using P12 for anything anyway, because it also selects the boot mode. Therefore it will force the device into safe boot if P12 is for some reason high while it is booting.

@jmarcelino Hi Jose, thanks for the confirmation. What was the reason for moving away from GPIO16 for the antenna switch?