var phoneScale = parseInt(window.screen.width) / 750;
if(/Android (\d+\.\d+)/.test(navigator.userAgent)) {
    if(parseFloat(RegExp.$1) > 2.3) {
      document.write('<meta name="viewport" id="vie" content="width=750, minimum-scale = ' + phoneScale + ', maximum-scale = ' + phoneScale + ', target-densitydpi=device-dpi">');
    } else {
      document.write('<meta name="viewport" id="vie" content="width=750, target-densitydpi=device-dpi">');
    }
} else {
    document.write('<meta id="vie" name="viewport" content="width=750, user-scalable=no, target-densitydpi=device-dpi, minimal-ui">');
}
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