Yes, new Business customers and current Business customers who have only one paid voice line are eligible to receive this promotion, as long as the account remains 5 lines or less after adding lines for the promotion. New customers must activate at least 3 voice lines on an eligible plan and existing single-line customers must activate at least two additional voice lines on an eligible plan to receive one of the lines free. Eligible T-Mobile for Business plans are Business Unlimited Select (1-5), Business Unlimited Advanced (1-5), or Business Unlimited Ultimate (1-5).
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1During congestion, Magenta customers using >100GB/mo. may notice reduced speeds until next bill cycle due to data prioritization; Essentials customers may notice speeds lower than other customers and further reduction if using >50GB/mo., due to data prioritization. Video typically streams on smartphone/tablet at DVD quality (480p); Magenta Max: activate up to 4K UHD streaming on capable device, or video typically streams at 480p.
25G: Capable device req'd; coverage not available in some areas. Some uses may require certain plan or feature; see plan for details. Scam Shield: Capable device req’d. Turning on Scam Block might block calls you want; disable any time. Taxes & fees: Sales tax and regulatory fees included in monthly rate plan price. HD Streaming: Capable device required to experience HD resolution. On-device streams at up to 1080p; pass does not impact tethering. Some content providers may not stream in HD. Buy & turn on. UHD Video Streaming: Capable device required for some features. Activation required to deliver video streams at speeds that provide up to Ultra HD video capability (max 4k); some content providers may not stream their services in UHD. May affect speed of video downloads; does not apply to video uploads.