: Offers up to $300 per line for new customers who bring their own device and sign up for an Unlimited Max plan.
: Most "300" deals require a postpaid plan and a number transfer (port-in) from a competitor.
: Carriers typically require a final bill from your previous provider to prove the number was active and in good standing.
: If bringing your own phone, ensure it is fully paid off and unlocked by your current carrier before attempting to switch.