Hmmm - Perhaps I should back up and re-trace some steps here.
- First of all, you have your phone updated, and you've got it hooked up to your WiFi on your home network, and you tested speed with it on.
- Then, you wanted to test your carrier network, so you turned WiFi off on your phone - leaving your actual WiFi home network on - as in connected.
- Now, your home computer will not connect using WiFi, and is acting strange.
Is this the gist of the problem? If so, have you
- rebooted the computer?
- power cycled (aka rebooted) the wireless router?
Also, is your home computer also wireless or is it wired?