https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2011/02/08/windows-phone-7-minimize-cellular-data-connection-usage.aspxLately, several posts (e.g. http://www.1800pocketpc.com/2011/01/09/windows-phone-7-3g-woes.html) were mentioning issues with overcharging related to cellular data connection usage of Windows Phone 7. From what I read later on, after looking into thoseelCommunityServer 2.1 SP3 (Build: 20423.1)