Ookla Study in Manila: Carrier VoLTE Networks Prove to Outperform OTT Apps in Voice Quality and Reliability
While operator voice calls consistently delivered HD-grade audio quality—rated " Good"(scoring > 4.0) to " Excellent" (scoring > 4.3) across all three networks, OTT voice calls were rated only as "Fair" (scoring < 4.0). Smart and DITO achieved higher MOS scores than Globe by deploying the advanced EVS codec, which offers superior audio fidelity over Globe's AMR-WB.Conversely, this gap exists because OTT apps treat voice as generic data packets, vulnerable to the internet's "best-effort" delivery. Even with operator network optimizations, OTT voice lacks the stringent Quality of Connection (QoC) guarantees.
- ▪While operator voice calls consistently delivered HD-grade audio quality—rated " Good"(scoring > 4.0) to " Excellent" (scoring > 4.3) across all three networks, OTT voice calls were rated only as "Fair" (scoring < 4.0).
- ▪Smart and DITO achieved higher MOS scores than Globe by deploying the advanced EVS codec, which offers superior audio fidelity over Globe's AMR-WB.Conversely, this gap exists because OTT apps treat voice as generic data packets, vulnerable
- ▪Even with operator network optimizations, OTT voice lacks the stringent Quality of Connection (QoC) guarantees.
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| Publication time | Mon, 27 Jul 2026 09:40:11 +0530 |
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MANILA, Philippines , July 27, 2026 /PRNewswire/ -- Ookla's comprehensive controlled network test reveals that traditional mobile operator networks deliver a measurably superior voice experience compared to Over-the-Top (OTT) applications like WhatsApp, particularly in critical areas such as audio fidelity, weak signal resilience, and call reliability.The study, which evaluated the networks of the Philippines' three major mobile operators— Smart Communications, Globe Telecom, and DITO Telecommunity , demonstrates that carrier-managed VoLTE infrastructure remains the gold standard for consistent, high-quality communication, outperforming OTT voice services.Operator Voice Deliver Consistent HD Audio, OTT Apps Only Offer Fair QualityThe research found a distinct quality gap in audio…
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