New York (CNN Business) Sprint and T-Mobile have been trying to get married for years. They just got a step closer.

The companies announced Monday that they have adjusted their merger terms to address concerns brought to them by the FCC. The regulator and the US Department of Justice both have to approve the deal before the companies can complete their merger.

The companies agreed to certain coverage commitments, including 100 Megabit-per-second download speeds (equivalent to fast home broadband speeds) accessible to about 66% of Americans within three years of the deal's closing. The companies pledged to build a 5G network within six years following the merger. That network will, they promised, also include coverage for some rural Americans, and they said the new company will offer an in-home broadband product.

Sprint will divest its low-cost Boost Mobile wireless company, and that new company will promise to offer better prices than those currently offered by T-Mobile or Sprint for three years following the deal's closing. The companies agreed to pay the FCC up to $2.4 billion in fines if they violate the agreement.

FCC Chairman Ajit Pai on Monday announced that he now believes the deal is in the best interest of American consumers, and he'll recommend that the FCC approve the merger.

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