First, Download lingoes font file

Android default fonts can not display phonetic symbol.
lingoes.ttf can, please download it.

Second, Put lingoes.ttf to assets/font

assets_font_lingoes.ttf

Last, Add "lingoes" font-family in css files under assets

@font-face {
    font-family: 'lingoes';
    src:url('file:///android_asset/fonts/lingoes.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

Use "lingoes" as font-family for the phonetic symbol content

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