Play Store having new version of the app, but not showing update

Question

I have my app installed in my cell with version 1.0.5 ( Version code 9)

In Google Play Store, I can see my app with version 1.0.7 ( Version code 11 ), but it doesn't show me the button update ( it is showing me the button "Open")

Is it something I have to include in my app???

Is it a bug in Play Store???

Is it a configuration problem???

I join my AndroidManifest.xml

<uses-sdk     android:minSdkVersion="16"     android:targetSdkVersion="20" />  <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="com.spg.googlemaps.permission.MAPS_RECEIVE" /> <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.WRITE_SETTINGS" />  <!-- <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.BATTERY_STATS" /> --> <uses-feature     android:name="android.hardware.camera"     android:required="true" /> <uses-feature     android:name="android.hardware.camera.front"     android:required="false" />  <permission     android:name="com.spg.googlemaps.permission.MAPS_RECEIVE"     android:protectionLevel="signature" />  <uses-feature     android:glEsVersion="0x00020000"     android:required="true" />  <application     android:name="com.myapp.MyApplication"     android:allowBackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:logo="@drawable/ic_logo"     android:theme="@style/Theme.AppCompat" >     <uses-library android:name="com.google.android.maps" />      <meta-data         android:name="com.google.android.gms.version"         android:value="@integer/google_play_services_version" />      <activity         android:name="com.myapp.SplashScreen"         android:label="@string/app_name"         android:noHistory="true"         android:screenOrientation="portrait"         android:theme="@android:style/Theme.Black.NoTitleBar" >         <intent-filter>             <action android:name="android.intent.action.MAIN" />              <category android:name="android.intent.category.LAUNCHER" />         </intent-filter>     </activity>     <activity         android:name="com.myapp.LoginActivity"         android:label="@string/title_activity_login"         android:noHistory="true"         android:screenOrientation="portrait"         android:windowSoftInputMode="adjustResize|stateVisible" >     </activity>     <activity         android:name="com.myapp.DashBoard"         android:label="@string/app_name"         android:screenOrientation="portrait" >     </activity>     <activity         android:name="com.myapp.FragmentTabsPdv"         android:label="@string/app_name"         android:screenOrientation="portrait" >         <meta-data             android:name="android.support.PARENT_ACTIVITY"             android:value="com.myapp.DashBoard" />     </activity>      <meta-data         android:name="com.google.android.maps.v2.API_KEY"         android:value="@string/maps_key" />      <activity         android:name="com.myapp.RutaActivity"         android:label="@string/title_activity_ruta"         android:screenOrientation="portrait" >         <meta-data             android:name="android.support.PARENT_ACTIVITY"             android:value="com.myapp.FragmentTabsPdv" />     </activity>     <activity         android:name="com.myapp.BaseActivity"         android:label="@string/title_activity_base"         android:screenOrientation="portrait" >     </activity>     <activity         android:name="com.myapp.SettingsActivity"         android:label="@string/title_activity_settings"         android:screenOrientation="portrait" >         <meta-data             android:name="android.support.PARENT_ACTIVITY"             android:value="com.myapp.DashBoard" />     </activity>     <activity         android:name="com.myapp.InformacionPdvActivity"         android:label="@string/infoPdv"         android:screenOrientation="portrait" >         <meta-data             android:name="android.support.PARENT_ACTIVITY"             android:value="com.myapp.RutaActivity" />     </activity>      <receiver android:name="com.myapp.BaseActivity$NetworkChangeReceiver" >         <intent-filter>             <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />         </intent-filter>     </receiver>      <activity         android:name="com.myapp.MetricaTabs"         android:label="@string/title_activity_metrica_tabs"         android:screenOrientation="portrait"         android:windowSoftInputMode="adjustPan" >         <meta-data             android:name="android.support.PARENT_ACTIVITY"             android:value="com.myapp.RutaActivity" />     </activity>      <meta-data         android:name="com.crashlytics.ApiKey"         android:value="7d80161d908dd5424f232598dba254c7d2a43307" />      <activity         android:name="com.myapp.SendMessageActivity"         android:label="@string/title_activity_send_message" >     </activity> </application> 

Answer 1

Make sure the app you have installed in your mobile is not an apk built with debug keystore. The play store will show always as "Open" button instead of "Update" if the play store app certificate doesn't match with the installed app certificate. I realized this when I did trial and error with debug and signed apk's only signed apk worked. And always use versionCode for comparing versions instead of versionName.