As of Twilio Client 1.4, some cutting-edge features were added that make use of browser functionality that is implemented inconsistently between browsers themselves. For this reason, browsers may behave differently. The following is a support matrix listing compatibility with Chrome 56, Firefox 51, Edge 38 and Safari 11. Any feature not listed here is compatible with recent versions of Chrome, Firefox, Safari and Edge:
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Mobile browsers including Safari and Chrome on iOS and Chrome on Android are not supported by Twilio Client. Instead, we recommend the use of Twilio’s Programmable Voice SDKs to develop native Android and iOS apps.