vue-mobile-detection - Vue.js prototype function this.$isMobile() that returns a Boolean value depending on whether or not the user is browsing with a mobile.

import VueMobileDetection from "vue-mobile-detection";
Vue.use(VueMobileDetection);

/* After the install you can use this.$isMobile() in all your vue components */

<template>
  <div id="app">
    <!-- Use in template -->
    <div v-if="$isMobile()">MOBILE</div>
    <div v-else>DESKTOP OR TABLET</div>
  </div>
</template>

<script>
export default {
  created() {
    // Use in js
    console.log(this.$isMobile());
  }
};
</script>