India, April 15 -- and another result that might raise a few eyebrows.

The report, released Thursday, credited T-Mobile with the best 5G availability in 45 markets tested but gave an overall nod to AT&T for superior 5G download speeds and reliability.

"AT&T led the competition, delivering a combination of the fastest worst-case, median, and best-case 5G download speeds together in 14 cities," the report summed up. "T-Mobile registered the fastest speeds across all three metrics in six markets, while Verizon did so in three cities."

The RootMetrics report noted that T-Mobile was the only carrier out of the big three to offer 5G in all of the 45 cities it tested, while AT&T offered it in 44 and Verizon in 43. The most recent nationwide R...