Ambani's Reliance Jio doubles down on 5G service pledge after record profit

Indian billionaire Mukesh Ambani doubled down on his promise to offer 5G services on his wireless network as early as this year, as his conglomerate Reliance Industries Ltd. reported a record profit aided by its consumer businesses.

The group’s wireless operator, Reliance Jio Infocomm Ltd. -- India’s largest -- has started advance tests to prepare the fifth-generation, high-speed network, it said in a statement Friday. But the tycoon’s plans hinge on the availability of spectrum as the Indian government still hasn’t auctioned the required airwaves.

The Mumbai-based group, whose businesses span oil refining and petrochemicals to retail and telecommunications, said it’s testing