My Ionic2 App runs perfectly using ionic serve but the debug apk doesn't?

I made an app that is supposed to retrieve user data with the click of a button from my api. On click the button uses rxjs to make an http get request to my server and retrieves the data as JSON and out puts it into a list using ng*for(the iterative loop thing). It seems to work fine on the browser but after I deploy the apk and run it on my phone clicking the button seems to do nothing. So I don’t know if the request for data is failing or I did something I wasnt supposed to on my front end. I don’t know how to debug on my phone. I am new to angular2, typescript and Ionic2… how do I debug an app on my phone? HALP! :stuck_out_tongue: . If some one could point me n the right direction it would be much appreciated.