How do I make my computer connect to a wireless network while also receiving internet service from my phone?

[Frank S]

You should be able to connect multiple devices to your phone. If not, connect your phone through UBS and transmit the internet that way. Then connect the wireless to your computer so it connects to your Chromecast. Its a lot of settings that should be available in your networking folder to mess with. So the flow of internet should look like this: Phone => Computer => Router => Chromecast. But you should have an app on your phone to that controls your Chromecast. Hope this helps.