The prospect of a merger between T-Mobile and Sprint was big news on Wall Street Monday, after the third- and fourth-largest wireless carriers in the United States announced plans for an all-stock deal that would bring Sprint into the fold of T-Mobile, the larger of the two companies.

The deal is far from a sure thing, as analysts expect it to face tough regulatory scrutiny. The implications for consumers also are unclear: While industry experts say it would probably help pave the way for a faster rollout of a nationwide 5G network, speedier service could mean higher monthly bills for users.More at NBC News