A €20.35 billion deal to dismantle SFR will trigger a months-long review by France's competition authority, as the country's largest telecom groups move to carve up the Altice France-owned carrier.

The Autorité de la concurrence confirmed it will examine the transaction, which redistributes SFR's mobile, fixed-line, and wholesale operations among rival French carriers. Such reviews rarely close quickly when a four-player market sits at stake.

France has run a four-player mobile structure since Free Mobile's January 2012 launch ended the Orange-SFR-Bouygues triopoly. Orange, SFR, Bouygues Telecom, and Free Mobile together serve more than 70 million retail mobile subscribers, by industry estimates. Any reshuffle that touches that balance turns into a regulatory event.

The €20.35 billion price tag puts the deal among Europe's largest telecom transactions of the last five years. It comfortably exceeds recent mid-market European combinations and approaches the scale of past national carve-outs.

What does a breakup change for the regulator?

Breakup transactions, unlike standard mergers, force the Autorité to examine each piece of the seller separately. It will check spectrum concentration, retail market share, and wholesale reach for every buyer. No single operator can end up with too much of any one resource.

The authority will also weigh whether the wholesale and infrastructure slices leave the market healthier, or merely more fragmented. That judgment typically arrives after weeks of market testing and third-party submissions from competitors, customers, and consumer groups.

When does the closing date arrive?

Phase II reviews for telecom mergers of this scale in France typically run six to nine months. Add commitments on pricing, network access, or spectrum divestitures, and the closing date drifts well into 2026. The parties will likely file the formal notification within weeks, kicking off the clock.

Brussels may also enter the picture. The European Commission retains jurisdiction over deals that affect cross-border wholesale markets or coordinated spectrum use. If Brussels claims the file, the review adds months and potentially separate concessions on top of any French remedies.

Will France stay a four-player market?

For consumers, the practical question is whether four players stay four. The authority's verdict, not the press release, settles that. Until then, expect a steady drip of filings, third-party complaints, and the occasional leak from the market-testing phase.

Altice France has controlled SFR since 2014, when it acquired the operator from Vivendi. The €20.35 billion figure suggests the buyers priced in regulatory friction. Whether that cushion proves adequate is a question only the Autorité can answer.

For now, the only number that matters is €20.35 billion. The next one to watch is the closing date.