[SOLVED] Can't seem to access .xip.io URL from my iPhone when running Rails app with Pow

Can't seem to access .xip.io URL from my iPhone when running Rails app with Pow

I've tried accessing my Rails app running with Pow (4.3) from my iPhone 5 but I'm running into issues...

If I type my_app.192.168.2.11.xip.io:

it runs OK on my development machine (i.e. the machine with the 192.168.2.11 LAN address)
it doesn't find the host on my iPhone

Of course, the 2 machines are on the same LAN and I tried to access my router's administration web server from my iPhone:

192.168.2.1 works: I get to my router's admin web server just fine.
192.168.2.1.xip.io doesn't work! "The host couldn't be found."

Is there anything special to set up for .xip.io addresses to be resolved properly on the iPhone?

EDIT:

I'm working in a café with internet sharing via my iPhone's 4G network. Now .xip.io IP work on my phone. It should have something to do with my LAN configuration then. I have an ASUS router.

Solution

Thanks to this post, I configured my ASUS RT-N56U router to use Google's DNS addresses (i.e. 8.8.8.8) and it works fine now.

Edit: If you are connected via Wifi router, then you need to enable port forwarding to forward a certain port (like 8080) to your laptop.