: Each device typically incurs a $30–$45 activation or upgrade fee .
: While BOGO deals were powerful tools for adding new lines (acquisition), trade-ins allow AT&T to lock existing customers into new 36-month cycles (retention). Consumer Considerations & Pitfalls at&t buy one get one free deal
: Both devices must be on an eligible unlimited data plan , which can significantly increase the monthly service cost. : Each device typically incurs a $30–$45 activation
: Customers must pay the full monthly installment for the first few months until credits kick in; catch-up credits are then applied to the account. at&t buy one get one free deal