Never Authenticated Error on Device

[dev9163]

Hi,

I am trying to achieve deferred login in my app. I changed the should authenticate to false in bootconfig.json. I have also written the following code in the place I need to login:

let appId = <my_app_id>;
let loginURL = 'https://test.salesforce.com';
let oauthCallbackURL = 'http://localhost:8100/oauthcallback.html';
let oauth = OAuth.createInstance(appId, loginURL, oauthCallbackURL);

oauth.login().then((oauthData) => {
  DataService.createInstance(oauthData, { proxyURL: "https://dev-cors-proxy.herokuapp.com/" });
});

But, on running my app in the device, I get the following error:

TIMING com.salesforce.oauth:getAuthCredentials: 79.577ms plugins/com.salesforce/www/com.salesforce.util.exec.js:43 TIMING com.salesforce.oauth:getAuthCredentials failed vendor.js:52086 Never authenticated vendor.js:54803 EXCEPTION: Uncaught (in promise): Never authenticated vendor.js:54808 ORIGINAL STACKTRACE:vendor.js:54808 ErrorHandler.handleError vendor.js:54809 Error: Uncaught (in promise): Never authenticated at s (file:///android_asset/www/build/polyfills.js:3:8568) at s (file:///android_asset/www/build/polyfills.js:3:8391) at file:///android_asset/www/build/polyfills.js:3:8902 at t.invokeTask (file:///android_asset/www/build/polyfills.js:3:14051) at Object.inner.inner.fork.onInvokeTask (file:///android_asset/www/build/vendor.js:27523:37) at t.invokeTask (file:///android_asset/www/build/polyfills.js:3:14025) at e.runTask (file:///android_asset/www/build/polyfills.js:3:11411) at i (file:///android_asset/www/build/polyfills.js:3:8028) at u (file:///android_asset/www/build/polyfills.js:2:16275) at file:///android_asset/www/build/polyfills.js:2:16399vendor.js:54809 ErrorHandler.handleError

I am stuck in this for 3 weeks now. Can someone please help me in this?

I am using Ionic 2 and Angular 2. Salesforce Mobile SDK 6.1 (5.3 also has the same error)