session-android/res/xml/syncadapter.xml

<?xml version="1.0" encoding="utf-8"?>
<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android"
              android:contentAuthority="com.android.contacts"
              android:accountType="org.thoughtcrime.securesms"
              android:userVisible="true"
              android:supportsUploading="true"
              android:allowParallelSyncs="false"
              android:isAlwaysSyncable="true"/>