Sprint’s call performance
Based on RootMetrics 2H15 national results, Sprint’s (S) call performance improved during the period. A recent blog post by Dr. John Saw, Sprint’s CTO (chief technology officer), on February 18, 2016, highlighted some aspects of these RootMetrics results. According to Saw, “As for call performance, we’re pleased to have edged out AT&T for second place nationally.”
Call performance of wireless carriers in 2H15
Based on RootMetrics’ 2H15 national results, Sprint’s second-place ranking among the top four US wireless carriers in the call performance parameter remained the same as in 1H15. But it didn’t have to share this spot with AT&T as it did in 1H15. AT&T got the third rank in this metric in 2H15.
Meanwhile, Verizon Communication (VZ) and T-Mobile US (TMUS) retained their first and fourth spots, respectively, in this metric in 2H15. It’s worth noting that according to RootMetrics, VoLTE (voice-over-LTE) was not enabled while testing calls on the T-Mobile network.
Network reliability of wireless carriers in 2H15
Now let’s look at the performance of the top four US wireless carriers in the network reliability parameter. According to RootMetrics’ National results, all the top four US wireless carriers retained their respective 1H15 ranks in this metric in 2H15. Verizon, AT&T, Sprint, and T-Mobile got first, second, third, and fourth spots, respectively, in this parameter in 2H15.
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Now let’s look at network speed performance.