ionic serve with wifi hotspot to test on mobile

I'm trying to test our app in the mobile browser.

• I started a wifi hotspot
• Ran ionic serve on our project root
• Connected to wifi on mobile device
• On mobile browser went to http://localhost:8100

but I get a page not found. Shouldn't the ionic app load on browse if I connect to the wifi hotspot of the pc running the app server?

The best way to do it:

1. Make Personal Hotspot from your mobile Device to your Computer
2. run ionic serve
3. Read the the output this command throws. There you can see an External IP-Adress
4. Open the Browser on your smartphone and use the Exernal IP-Adress + 8100 (Port)

For example: http://192.168.32.12:8100