Log in to My Account.
Click Manage Devices.
View By should be set to Plan.
Click the drop down to select the line.
Click Change Plan.
Complete and submit your order.
Log in to My Account.
Click Manage Devices.
Select the line to be suspended/resumed.
Click the three dots to the right of the device.
Click Suspend or Resume.
Choose from these options:
Short Term Suspend - Up to 60 days.
Long Term Suspend - Up to 150 days ($10 monthly charge applies during the suspension).
Lost/Stolen Suspend - Up to 60 days (If you have Device Protection+ you may use this time to submit a claim.