Wifi, bluetooth keyboard, and magicmouse don't work with native install of 16.04

My machine is a late 2013 iMac 27".
Specs are Intel Core i5 3.2 GHz with 4 cores, 24 GB RAM (customized).

Wifi, bluetooth keyboard, and magicmouse don't work with native install of Ubuntu Linux 16.04. What are the steps I should go through to fix this problem? Do I need to troubleshoot the problem or write a driver for these devices? Thanks!