Legal Disclaimer: Legal Disclaimer: Select customers can add a line to their family plan for free. Limited-time Offer. With monthly bill credits. Subject to change. Free new line for qualifying existing accounts with 2+ voice lines and a max of 2 current free lines. Plus taxes & fees for accounts paying for a T-Mobile wireless line with additional taxes & fees; monthly Regulatory Programs (RPF) & Telco Recovery Fee (TRF) totaling $3.49 per voice line ($0.50 for RPF & $2.99 for TRF) applies; taxes/fees approx. 4-38% of bill. Qualifying credit and regular-rate, Unlimited, Unlimited Freedom, Magenta, Magenta Max, Magenta Amplified, Magenta Plus, One, Simple Choice, Everything, My Way, Sprint Max, One, or Sprint Unlimited plan required. If you have cancelled lines in past 90 days, you may need to reactivate them first. Credits may take up to 2 bill cycles; credits will stop if you cancel any lines or change plans. $10 device connection charge due at sale. Limit 1/account. Not combinable with some offers or discounts, including other service discounts, device offers, or Price Lock; choosing free line gives up access to Go5G Plus or Go5G Next device offer features for this line only. See rep for details.