@Michel77 just login to My Account, go to Plan &addon page, click Change my plan, there you will see the full list of the plans. Make sure you are at the 4G speed plan tab. Scroll using the yellow arrows on the far right
Log into self service and choose Plan & Add-Ons. You can then make a plan change. Choose change on next renewal date otherwise you will not get any credit for your current plan if you make an immediate plan change.
