This has just started happening in the past week.
Using the web browser or linking from an email, or selecting go to Mobil site.
Doing any of these just gets me the loading blue screen put it never gets past that.
I've checked my Mobil web setting it is on.
Try doing a soft reset for your phone by pulling the battery for 1to 2 minutes to let your phone reboot and/or you can dial *228 to update the network. This could be very helpful in case its actually a network issue and not your phone.