What is the cancellation fee? Should you wish to terminate your account the complete cancellation fee of $250 is applicable if the Modem is not returned in working condition plus your current month?s subscription fee. Related articles How often should I make a payment? What is APN (Internet Settings), and how do you use it? How to stop background apps from using your data What is 55GB ANYTIME? How to opt into the 55GB Anytime plan?