Question about Verizon Share Everything plan

[rgG]

neophyte wrote:
If you get a warning that you are about to go over, call Vzw customer service and ask to go up to the next data level and have the change BACKDATED to the beginning of the current billing cycle. This will get you another 2GB for $10 (or go higher if you are far from the end of the current billing cycle and you think you will use more than 2GB). You must do this before the end of the current billing cycle to avoid the $15/1GB overage charge. Then, once in the next billing cycle, you can go back down to your original level, but it can't be backdated. So, make that change as soon as you can after the start of the new billing cycle and make sure customer service puts it into effect that day. You will be prorated for the data plan that month: a day or two (depending on when you called) at the higher rate, and most of the month at the lower rate. Or, if the pending overage is anticipated to be only 1GB or less, just leave the plan unchanged and pay the $15. There is no fee for changing the data plan, no change to the contract dates, no change to upgrade dates, etc.

Edit: You can change the data plan from any level, to any level. Up or down. But backdating to the beginning of the current billing cycle can only be done when going up.

Thank you very much! I will give this to my daughter so she knows exactly what to do, if they get close to their limit.
Again, thanks for the great explanation!