This is 3 fair usage policy for the X-Series.
Fair Use Limit: 1 GB each month
X-Series - 1 GB should be more than enough to allow you to surf websites, use ISP email and download podcasts
X-Series Silver & Gold - 1 GB should be more than enough to allow you to surf websites, use Mobile Mail and download podcasts
We will let you know by text message once you have reached the fair use limit and ask you to cease using the included data services for the remainder of the month. If you continue to use the services we may suspend your data usage until the next month. This will not impact your access to other X-Series services.
Unlimited Windows Live Messenger
Fair Use Limit: 10,000 messages each month
This is more than 300 messages each and every day! If you exceed 10,000 messages we may suspend your access to Windows Live Messenger until the next month.
Unlimited Skype to Skype calls
Fair Use Limit: 5,000 minutes each month
5,000 minutes is more than 2.5 hours a day of Skype calls – every day of the month. We will send you a text message to let you know when you have reached 4,500 minutes. If you exceed 5,000 minutes we will suspend your usage and it will not resume until the next month, however you will still be able to receive Skype calls.
Unlimited Slingbox and Orb (on X-Series Gold)
Fair Use Limit: 80 hours each month
On X-Series Gold you get access to Orb and Slingbox (if you have one). These services have a total combined fair use limit of 80 hours each month. We will let you know by text message once you have reached the fair use limit and ask you to cease using it for the remainder of the month. If you continue to use the services we may suspend your Orb and Slingbox usage until the next month.