Increase keep alive for connections

app/src/main/AndroidManifest.xml

@@ -14,7 +14,8 @@
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:theme="@style/TraccarTheme">
+        android:theme="@style/TraccarTheme"
+        android:name=".MainApplication">
 
         <activity android:name=".MainActivity" android:launchMode="singleTask" />