Two large cell phone carriers wish to merge into a single company. Which regulatory agency will review the merger and determine if the two companies can combine?

The regulatory agency that would review the merger of two large cell phone carriers into one single company is the Federal Communications Commission (FCC). FCC is an independent agency of the United States government that regulates interstate communications by radio, television, wire, satellite, and cable. In this case, the merging of two cell phones companies is part of the duties that FCC regulates. Nowadays, FCC is reviewing the merging of Sprint and T-Mobile.

National Commission of Markets and Competition (CNMC) for it's acronym in spanish.

It is a organism that regulates and defends the good funcrioning of all markets.