I think that Intellisync works find accept from the battery time in my and my colleague phones. Since we installed the client the battery time is out in about 24 hours ( and that is good). We want to have push mail on but it seams the phone is searching ALL the TIME! What is the best battery economy settings without losing to much of "office performance"? The phones are Sony Ericsson P990i and Nokia E61 and E61i.