Uber Technologies, a ridesharing service which uses a smartphone application to arrange transportation between riders and drivers, is teaming up billionaire Carlos Slim to help the car-booking app reach more consumers’ mobile phones in Latin America.

Slim’s America Movil, whose Telcel service has seven out of 10 mobile-phone users in Mexico, will feature the app on all Android phones in the country starting this week, and the partnership will extend across Latin America in the coming months.

According to Uber, the Latin American markets have become some of the fastest-growing for the ride service since the startup began operating last year in Mexico. Last month, Uber began operations in the Mexican cities of Tijuana and Monterrey, and in Brazil’s capital, Brasilia.

"This partnership is the next big step for our growth in Latin America and will serve as a model across other regions in the world," Uber said in a statement. The company has rolled out its car-booking services to more than 220 cities worldwide.

The alliance "promotes the creation of new jobs through a wider offer of transportation options and a new wave of modernization in our country’s transportation," said Uber Mexico director Rodrigo Arevalo.

Uber has been raising more money as it continues to expand internationally. The five-year-old startup has just recently raised another $1.2 billion in investor funding, and this round of financing will value the company at between $35 billion and $40 billion. That is more than double its valuation from a June financing round and will make it more valuable than Twitter and Hertz Global Holdings Inc.

Riders using America Movil’s Telcel will receive a discount of $150 pesos ($10.63) when they first use the app, while Uber drivers in Mexico will receive special discounts on mobile packages from Telcel.

America Movil serves more than 260 million subscribers in 18 countries.