Originally Posted by
sbm12
I cannot be done online. To do it go to Options | Advanced | SIM Card and copy that number down somewhere. Then call *611 and request to change your plan. Tell them you want to switch to the unlimited international data plan. They will likely transfer you to global support. If they don't ask you for the SIM card number then ask them to confirm that the SIM is activated. Then they'll ask for the number and make it happen.
Shouldn't take much more than 10 minutes start to finish.
Make sure Verizon asks for your sim card number, without it your phone will be a brick outside the US (except for a few countries). Recently when traveling my girlfriend and I both added the unlimited international data plan, but when she called they never asked for her sim card number, mine was stored since I have traveled before. Long story short, when we land her phone is a brick showing SOS only and mine works on 3G without a problem.