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The celebrity arms race between the cellphone companies is getting very expensive.

Page Six has learned that Mark Wahlberg has signed a massive eight-figure deal with AT&T to be its new spokesperson and create original content for the mobile network.

Wahlberg — whose deal is said to be above $10 million — comes after Taylor Swift signed a multiyear deal with the same network.

As part of the contract, the “Shake It Off” singer performed a show before February’s Super Bowl and will cook up exclusive material for the network’s subscribers.

Wahlberg and Swift are going toe to toe with Verizon’s team of Jamie Foxx — who calls out Sprint in his “Can You Hear Me Now” ad from last year — and Ricky Gervais, who poked further fun at Sprint and its hometown of Kansas City, Kan., which led to a torrent of tweets from Sprint CEO Marcelo Claure.

Meanwhile, T-Mobile hired Justin Bieber at much expense (about $2 million) and Rob Gronkowski at little expense (about $250,000) for its Super Bowl commercial. The brand also signed Ariana Grande last year for its “Road Trip” commercial in a deal said to be between $3 million and $5 million. An industry source told us, “This is an all-out celebrity mobile war. The competition is so fierce, and the stakes keep getting bigger, that the mobile networks are spending more and more money to outdo the rest. How far can this go?”

AT&T said last year it plans to double down on original programming after snapping up DirecTV for $48.5 billion in 2015. AT&T Entertainment Group CEO John Stankey believes the original content will make it stand out from cable and wireless rivals. It also took a 43.4 percent stake in Otter Media, led by former Fox executive Peter Chernin.

AT&T hopes to merge with Time Warner if the Trump administration approves the deal.

Reps for Wahlberg and AT&T declined to comment.