Approving a comment via the mobile interface doesn't (completely) work. The comment becomes visible, but comment counters don't update, email notifications aren't triggered etc.

This is caused in /plugins/wpmp_switcher/pages/mobile_admin.php

It currently writes directly to the database using
$wpdb->query("UPDATE $wpdb->comments SET comment_approved='1' WHERE comment_ID='$id' LIMIT 1");

It should use official function http://codex.wordpress.org/Function_Reference/wp_set_comment_status
So, rather than directly manipulating the database, we can simply call
wp_set_comment_status( $id, 'approve' );

(I've corrected this for Approve & Spam - I've also added the Delete function.)