Also: Should you upgrade your Wi-Fi router to mesh? I tested it for a month, and here's my verdict Yes, cellular could provide faster service compared with Wi-Fi, according to the latest data from Speedtest provider Ookla. To conduct its research, Ookla analyzed Speedtest user data for median download speeds at 50 of the top US airports for the first half of 2025. The testing compared Wi-Fi coverage against that of mobile carriers AT&T, T-Mobile, and Verizon.