apk - Why does the Android App that sends data to azure SQL Database not running on phone but on AVD on Android Studio? -

i trying make android app sends data phone sql database @ azure cloud.

i have followed, close possible,the tutorials given on https://azure.microsoft.com/en-us/documentation/articles/mobile-services-dotnet-backend-android-get-started/

first off all, have little bit confusion regarding creating .apk file in android studio. here, have assumed .apk in \app\build\outputs.

now, trying run app-debug.apk on redmi 1s android version 4.3 jls36c, app opens , vanishes away. tried run on samsung galaxy note-3 neo (sm-n750) android version:android 4.4.2

when try run app on emulator itself, running. not on phones. do? here build.gradle file

apply plugin: 'com.android.application'  android { compilesdkversion 20 buildtoolsversion "19.1.0"  defaultconfig {     applicationid "com.example.zumoappname"     minsdkversion 8     targetsdkversion 20     versioncode 1     versionname "1.0" } buildtypes {     release {         minifyenabled false         proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'     } }  repositories {     flatdir {         dirs 'aars'         }     } }  dependencies { compile filetree(dir: 'libs', include: ['*.jar']) compile 'com.google.code.gson:gson:2.3' compile 'com.google.guava:guava:18.0' compile 'com.microsoft.azure:azure-mobile-services-android-sdk:2.0.2' compile (group: 'com.microsoft.azure', name: 'azure-notifications-handler', version: '1.0.1', ext: 'jar') } 

please help!

try setting breakpoints in oncreate method , step through code can find out code failing.

another issue have run device failures when network connection not available.

but try find out line of code failing...