Yes you can, but you can only 'upgrade' the value of your plan. Usually, you would upgrade when you are running out of your minutes or data and prefer to have a bigger plan Vs. using boosters. You can do this at anytime throughout your plan with the exception of the final month. So, between months 1-5 if you have a 6 months subscription or between month 1-11 if you have a 12 months subscription. What's awesome is you can "Upgrade" to a plan of your choice for the period between now and the completion of your 6 or 12 months subscription and enjoy a discounted price. Once you're ready for your upgrade, follow these simple steps:. 1) Open your Virgin Mobile APP and tap on the "Upgrade your Plan" button at the top of the home screen. 2) Select the plan you want and confirm your update. 3) Your upgraded plan will be effective starting on your next renewal date.