Taken from
AT&T's webpage:
AT&T Upgrade AdvantageSM
AT&T Upgrade Advantage is a custom-tailored program that rewards you simply for staying with us. Not only will you receive discounts on the widest selection of wireless phones, but the higher your monthly rate plan and data-package rates, the more youll save. Its a well-earned reward for your loyalty. Additional discounts do not apply to iPhone.
Monthly charges per line: Greater than $99
At 18-23 months since activation/upgrade
Additional $50 off our standard 2-year service agreement discount
24+ months since activation/upgrade
Additional $100 off our standard 2-year service agreement discount
Monthly charges per line: Between $69 and $98.99
18-23 months since activation/upgrade
Standard 2-year service agreement discount*
24+ months since activation/upgrade
Additional $50 off our standard 2-year service agreement discount*
Monthly charges per line: Less than $68.99
Standard 2-year service agreement discount begins after 20 months
* Monthly Recurring Cost (MRC) is based on a three month average of your rate plan plus selected data features.
* The Standard 2-year contract renewal discount is the same for new customers. Two-year contract renewal discount does not apply to iPhone.
* Upgrade offers are determined per each individual line.
* You can earn additional equipment discounts of up to $100 off of the standard 2-year contract renewal discounted price. Additional equipment discounts do not apply to iPhone.
* Additional discounts do not apply to iPhone. Upgrade AdvantageSM Program Terms and Conditions: See Rate Plan Brochure, Terms and Conditions and Wireless Service Agreement for full terms applicable to selected rate plan. Customer eligibility may vary based on credit history, payment history, payment status, customer type and other factors. Two-year service agreement required. Upgrade fee, if not waived, of $18 applies. An early termination penalty of no more than $175 applies if service is terminated before the end of the contract term. If phone is returned within 3 days, upgrade fee, if applicable will be refunded. If phone is returned within 30 days in like-new condition with all components, early termination fee will be waived. Not all phones, such as iPhone, qualify for additional discount. Rate plan charge includes monthly charge and does not include usage charges. Data package charge includes monthly charge and does not include usage charges. Rate plan and data package charges are calculated based on the three (3) previous completed billing cycles. FamilyTalk® secondary lines do not qualify for the additional discounts. Any Mail-in Rebate or other discounts will reduce the additional discounts applied. Mail-in Rebate not available for iPhone. Additional discounts will not bring the price of equipment below $0. All other charges apply. Some dealers impose additional fees. © 2007 AT&T Knowledge Ventures. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Knowledge Ventures.