How fast does my mobile internet need to be to handle VoIP calls on my smartphone?

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With a strong wireless 4G LTE (Or 5G in the near future) connection, your smartphone can handle calls with HD call quality. It’s less about the speed, but the variance in network latency—often called jitter.

In most cases, a 3G signal is sufficient for a satisfactory VoIP call. In cases of weak cellular signal, you may opt for a stable Wi-Fi connection instead.

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