Can't Delete Contacts from Read-Only Accounts - Sync Adapter <p>I've created a custom SyncAdapter and given it the following XML:</p> <pre><code>&lt;sync-adapter xmlns:android="http://schemas.android.com/apk/res/android" android:contentAuthority="com.android.contacts" android:supportsUploading="true" android:userVisible="true" android:accountType="@string/authenticator_account_type"/&gt; </code></pre> <p>Thousands of searches has led me to 'supportsUploading="true"' but this is definitely not the case - contacts are still being marked as read-only.</p> <p>Since most of the documentation has a very "self-explanatory" vibe to it (Which is definitely not the case), I have no idea where to begin. Could someone please give me direction on this?</p> <p><strong>Edit:</strong> I even verified that the Account was in line with what Google has set for their accounts:</p> <p><img src="https://i.stack.imgur.com/XM7nY.jpg" alt=""> </p>