PS: This article is for only Kali Linux users, that too having a Broadcom Wireless chip set on laptops and mobile devices only. You may read further if this interest’s you for a sheer amount of frustration caused by Kali drives not able to detect your hardware.
This write-up is seriously for those specially on Lenevo devices. Maybe the commands mentioned below might come handy if your OEM manufacturer uses Broadcom chip set on there logic board. The commands are as shown in sequential order one after another. Make sure that you type/copy them properly. If all goes well after the restart you might be in definite luck in my honest opinion.
$ sudo -i
$ sudo apt update
$ sudo apt upgrade
# apt install firmware-nonfree
# apt-get install firmware-iwlwifi
# apt-get install firmware-b43-installer
# apt-get install broadcom-sta-dkms
# modprobe -r b44 b43 b43legacy ssb brcmsmac bcma
# modprobe wl
here $ equals to normal user, and # is a root user.
Kindly feel free to flame me in the comments section below.