ionic v2 app [Service based] not working on android devices - ionic2

ionic v2 app [Service based] not working on android devices. however the same working in the browsers. without service page is open easily, once service called nothing happend on the android device. please advice.

I have used below before creating build
$ionic platform remove android
$ionic hooks add
$ionic platform android
$ionic build android

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How to login in RingCentral softphone in ipad ios in developer sandbox mode

I have installed RingCentral Softphone in my ipad.
How to login in softphone in ipad ios in developer sandbox mode. I tried to check different options, but unable to find one
In Mac Os, I can switch to Sandbox via Cmd+F2 keys... but in iPad not finding solution
I still think in iOS, it may not be possible for sandbox mode as it doesn't support.. RingCentral Phone mobile app does not support sandbox mode.
I can get this reference: https://forums.developers.ringcentral.com/questions/1289/is-it-possible-to-use-sandbox-account-with-ios-app.html

How to select expo release-channel in the mobile app?

I can't find my newly published "QA" release channel in the expo mobile client app.
I've been using the default channel to publish my expo app while developing, and that works great. Now I want to test the same code in a QA environment. I published it successfully with expo publish --release-channel qa. I can even see it was published when I run expo publish:history.
But I can't see it in the expo mobile app so I'm not sure how to load it up and test it..
This isn't so much a solution as a workaround, but if I create an expo url like this in my mobile browser address bar, android will open it in the expo app:
https://expo.io/#myaccount/My-Project-Name?release-channel=qa

Appstore of WSO2 Appmanager or EMM

In the current versions of App-manager(1.1.0) and in EMM (2.0.1), there is no such facility to install the application through an application.Means, for installing the application we have to open the store by a URL on internet browser.In the upcoming versions of Appmanager/EMM can we expect a native app which can be installed on the mobile device,and it will redirect to all the application,just like a play store which android devices provide.Any suggestion will really be helpful.
In the current versions of App-manager(1.1.0) and in EMM (2.0.1), there is no such facility to install the application through an application.Means, for installing the application we have to open the store by a URL on internet browser.
Yes this is true. Currently EMM/App manager does not have a native application to browser the applications in the app store.
In the upcoming versions of app manager/EMM can we expect a native app which can be installed on the mobile device,and it will redirect to all the application,just like a play store which android devices provide.Any suggestion will really be helpful.
Yes, a native app for browsing and installing/uninstalling apps on a device will be available[1] in EMM 2.1.0 which is the upcomming version of WSO2 EMM. However, this will only be available for Android platform in EMM 2.1.0. You can build this application using Android studio[2] and use it with EMM 2.1.0. As for iOS and Windows platforms, if you wish to build an app catalog app your-self, you can refer the Android source code[2] and the swagger definitions of app manager's publisher[3] and store[1].
https://docs.wso2.com/display/EMM210/App+Catalog+Application+for+Android+Devices
https://github.com/wso2/product-emm/tree/master/modules/mobile-agents/android/app-catalog
https://github.com/wso2/carbon-appmgt/blob/master/components/org.wso2.carbon.appmgt.rest.api.util/src/main/resources/publisher-api.json
https://github.com/wso2/carbon-appmgt/blob/master/components/org.wso2.carbon.appmgt.rest.api.util/src/main/resources/store-api.json

WSO2 Mobile Version for store

I was exploring the store of WSO2 AppManager through my device, but it was redirecting to the web version of it.Is there any mobile version which we can access for the store.Any help will really be appreciated.
Currently(with EMM 2.0.1), there is no mobile catalog application available for browsing the app store and installing apps on to your device, like the Google playstore. However with EMM 2.1.0 which is the upcoming version of WSO2 EMM, there will be a Catalog application available for Android platform.
https://github.com/wso2/product-emm/tree/master/modules/mobile-agents/android/app-catalog

WSO2 Enterprise Store - how can I add mobile apps?

I'm trying out the beta/unreleased code for EMM 2.0 (which I believe is now MDM) and I undestand that the mobile app store and publisher function have been moved to Enterprise Store, however I'm unable to see/add mobile apps - I only see Gadgets and Sites.
I was looking for the source in case I missed the plugin, but at https://github.com/wso2/carbon-store/tree/master/features/extensions I only see Gadgets and Sites.
Can someone tell me how to enable mobile apps and/or point me to the mobile app plugin source?
FYI, I installed ES from http://wso2.com/products/enterprise-store/ and also master branch from the following:
https://github.com/wso2/product-mdm.git
https://github.com/wso2/carbon-device-mgt-plugins.git
https://github.com/wso2/carbon-device-mgt.git
You can use WSO2 App Manager,
Please read this doc to integrate it with WSO2 EMM
https://docs.wso2.com/display/APPM100/Mobile+Apps+Configurations
WSO2 is working on integrating app management features with WSO2 EMM 2.0.0. Device and App Management both features will be shipped with EMM 2.0.0 once it is released.