in case of live reload option, the config.xml creates the content src tag with the ipaddress of you computer so the webview will look for the index file on that ipaddress. When you remove the cable, the installed app will continue to refer to that ipaddress instead of the local.
Check this line in config.xml:
it should refer to index.html and not the ipaddress/index.html
Without looking at your code or access to your app, we cannot help you here. You need to see the safari console and debug your app.
When you stop ionic live reload, the config.xml is restored to original setting and hence, index.html is only shown. While still running the app, check config.xml for ipaddress/index.html. If it is there, it means that the app needs to be connected to the pc and run. if it is not there, it means that your code has the problem.
Did that just now, no luck. Xcode console is :
2015-09-03 17:40:47.497 BirlaSchool[1932:579555] DiskCookieStorage changing policy from 2 to 0, cookie file: file:///private/var/mobile/Containers/Data/Application/0CF1A516-0566-446F-BD13-B43CCE2F7ACF/Library/Cookies/Cookies.binarycookies
2015-09-03 17:40:47.552 BirlaSchool[1932:579555] Apache Cordova native platform version 3.8.0 is starting.
2015-09-03 17:40:47.553 BirlaSchool[1932:579555] Multi-tasking -> Device: YES, App: YES
2015-09-03 17:40:47.564 BirlaSchool[1932:579555] Unlimited access to network resources
2015-09-03 17:40:47.665 BirlaSchool[1932:579555] [CDVTimer][keyboard] 0.178993ms
2015-09-03 17:40:47.858 BirlaSchool[1932:579555] [CDVTimer][splashscreen] 193.006992ms
2015-09-03 17:40:47.907 BirlaSchool[1932:579555] [CDVTimer][file] 48.169971ms
2015-09-03 17:40:47.907 BirlaSchool[1932:579555] [CDVTimer][TotalPluginStartup] 242.570996ms
2015-09-03 17:40:48.221 BirlaSchool[1932:579555] Resetting plugins due to page load.
2015-09-03 17:40:49.668 BirlaSchool[1932:579555] Failed to load webpage with error: Could not connect to the server.
This is part of index.html
The Applicttion has numerous http calls.
This is the Xcode log if I run the app on device ,after running an instance on simulator with command: ionic build ios && ionic emulate ios --livereload
2015-09-03 18:19:10.601 BirlaSchool[212:5194] DiskCookieStorage changing policy from 2 to 0, cookie file: file:///private/var/mobile/Containers/Data/Application/89C0158A-E0FB-4975-BC48-79F630C549B6/Library/Cookies/Cookies.binarycookies
2015-09-03 18:19:10.746 BirlaSchool[212:5194] Apache Cordova native platform version 3.8.0 is starting.