My contract is only three months away before it expires, do I still have to pay the fuul amount for cancellation fee?
From the Customer Agreement link at the bottom of the page:
"If you cancel a line of Service, or if we cancel it for good cause, during its contract term, you'll have to pay an early termination fee. If your contract term results from your purchase of an advanced device, your early termination fee will be $350 minus $10 for each full month of your contract term that you complete. Otherwise, your early termination fee will be $175 minus $5 for each full month of your contract term that you complete. Cancellations will become effective on the last day of that month's billing cycle, and you are responsible for all charges incurred until then. Also, if you bought your wireless device from an authorized agent or third–party vendor, you should check whether they charge a separate termination fee."