Contact us before cancelling service to continue remaining bill credits, or credits stop and balance on required finance agreement is due (e.g. $999.99 –Galaxy Z Flip4 128GB). Tax on pre-credit price due at sale. Limited-time offer; subject to change. For add a line, qualifying credit and service required. For trade-in, qualifying credit, service, and trade-in (e.g. Save $1,000– iPhone 13 / $500 – iPhone 6) required. If you have cancelled lines in past 90 days, you may need to reactivate them first. In stores and on customer service calls, $35 assisted or upgrade support charge may be required. Up to $1,000 via bill credits; must be active and in good standing to receive credits; allow 2 bill cycles.