{"id":345969,"date":"2026-07-23T17:32:23","date_gmt":"2026-07-23T10:32:23","guid":{"rendered":"https:\/\/esim.holafly.com\/?p=345969"},"modified":"2026-07-23T17:32:23","modified_gmt":"2026-07-23T10:32:23","slug":"optus-roaming-vietnam","status":"publish","type":"post","link":"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/","title":{"rendered":"Optus roaming in Vietnam: Charges and activation guide"},"content":{"rendered":"\n<p>If you\u2019re an Optus customer in Australia planning a trip to the bustling streets of Hanoi or the serene waters of Ha Long Bay, staying connected is likely at the top of your checklist. In this guide, we will explain Optus roaming in Vietnam and the different plans available to help you stay connected without having to swap SIMs.&nbsp;<\/p>\n\n\n\n<p>We\u2019ll also introduce you to <a href=\"https:\/\/esim.holafly.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Holafly eSIM<\/strong><\/a>, which is one of the best alternatives to Optus in Vietnam, <strong>offering unlimited data with reliable coverage in 200+ destinations.<\/strong><\/p>\n\n\n  <div class=\"sidebar-blog banners-blog-wide invert-banner\">\n    <div\n      class=\"sidebar-blog-widget text-color-white \"\n              style=\"background-color: #E12B57\" >\n      <div>\n                              <div class=\"illustration\">\n              <img decoding=\"async\" src=\"https:\/\/media.holafly.com\/sites\/1\/2024\/11\/sammy-line-come-back-later-CTA-illustration.svg\" alt=\"\">\n            <\/div>\n                        <\/div>\n      <div>\n                  <div class=\"title\">\n            <p>Peace of mind before you fly<\/p>\n          <\/div>\n                          <div class=\"description\">\n            <br \/>\nSet up your eSIM before travel and get unlimited data on arrival.<br \/>\n          <\/div>\n                                              <button class=\"btn-primary-l cta-primary\">\n              <a target=\"_blank\" href=\"https:\/\/esim.holafly.com\/esim-vietnam\/\">Buy Holafly Vietnam eSIM<\/a>            <\/button>\n                                <\/div>\n    <\/div>\n  <\/div>\n  \n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">In this article<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#Can-you-use-Optus-roaming-in-Vietnam\" >Can you use Optus roaming in Vietnam?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#Optus-postpaid-roaming-passes-for-Vietnam\" >Optus postpaid roaming passes for Vietnam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#Optus-prepaid-international-roaming-packs\" >Optus prepaid international roaming packs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#Optus-roaming-Vietnam-pay-as-you-go-charges\" >Optus roaming Vietnam pay-as-you-go charges&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#How-to-activate-Optus-roaming-for-Vietnam\" >How to activate Optus roaming for Vietnam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/esim.holafly.com\/en-au\/blog\/optus-roaming-vietnam\/#Stay-connected-in-Vietnam-with-Holafly\" >Stay connected in Vietnam with Holafly<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can-you-use-Optus-roaming-in-Vietnam\"><\/span>Can you use Optus roaming in Vietnam?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Yes.<\/strong> <a href=\"https:\/\/esim.holafly.com\/roaming\/optus-international-roaming\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Optus international roaming<\/strong><\/a> works in Vietnam for both eligible postpaid and prepaid customers. <strong>Vietnam is categorized as an eligible Zone 1 destination<\/strong>, meaning you have access to Optus roaming options.<\/p>\n\n\n\n<p>While you&#8217;re in Vietnam, your phone will automatically connect to one of Optus\u2019 trusted local partner networks, such as <strong>Viettel<\/strong>, <strong>Vinaphone<\/strong>, or <strong>MobiFone<\/strong>, ensuring you have reliable coverage from North to South.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Optus-postpaid-roaming-passes-for-Vietnam\"><\/span>Optus postpaid roaming passes for Vietnam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For postpaid customers, Optus offers two main types of daily passes depending on which plan you are on.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Optus $5 roaming pass<\/h3>\n\n\n\n<p>The $5 roaming pass <strong>includes unlimited talk and text with 5 GB of data to use in one day.<\/strong> This is the standard for most modern Optus plans.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Eligibility:<\/strong> Available on Choice Plus, Optus Plus Family, Optus Plus Promo, Optus Plus Data, Optus Plus Kids, and Business Choice Plus\/Teams plans.<\/li>\n\n\n\n<li><strong>Cost:<\/strong> <strong>$5 per 24 hours<\/strong>. You&#8217;re only charged for days you actively use your phone, such as making calls, sending texts, or using data.<\/li>\n\n\n\n<li><strong>Inclusions:<\/strong> <strong>5 GB of data<\/strong> per 24-hour period and unlimited standard talk and text.<\/li>\n\n\n\n<li><strong>Activation:<\/strong> This pass is typically <strong>pre-activated<\/strong>. It triggers automatically the moment you use your phone in Vietnam. <strong>If you exceed 5 GB in a single 24-hour window, another $5 pass will automatically activate<\/strong> to give you another 5 GB.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Optus $10 roaming pass<\/h3>\n\n\n\n<p>If you are on an older postpaid plan or a non-Choice Plus plan, you may be eligible for the $10 Roaming Pass, which includes <strong>unlimited talk and text with 1 GB of data to use in one day.&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cost:<\/strong> <strong>$10 per 24 hours<\/strong>.<\/li>\n\n\n\n<li><strong>Inclusions:<\/strong> <strong>1 GB of data<\/strong> per 24-hour period and unlimited standard talk and text.<\/li>\n<\/ul>\n\n\n\n<p><strong>Note:<\/strong> Because this plan offers less data for a higher price, it&#8217;s often worth checking if you can switch to a newer &#8220;Choice Plus&#8221; plan before you depart. You can also use our <a href=\"https:\/\/esim.holafly.com\/tools\/data-usage-calculator\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>data usage calculator<\/strong><\/a> to estimate your daily needs and prevent any unexpected charges while abroad.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Optus-prepaid-international-roaming-packs\"><\/span>Optus prepaid international roaming packs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you are an Optus prepaid customer, you can purchase an international roaming pack before your trip to Vietnam. If you don\u2019t, you will be charged at standard pay-as-you-go rates, which might quickly drain your credit.&nbsp;<\/p>\n\n\n\n<p>Prepaid customers can purchase one of the following roaming packs:&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pack Type<\/th><th>Duration<\/th><th>Included Data<\/th><th>Standard Talk<\/th><th>Standard SMS<\/th><\/tr><\/thead><tbody><tr><td>$5 International Roaming<\/td><td>1 Day<\/td><td>1 GB<\/td><td>25 Mins<\/td><td>50 SMS<\/td><\/tr><tr><td>$25 International Roaming<\/td><td>14 Days<\/td><td>5 GB<\/td><td>50 Mins<\/td><td>50 SMS<\/td><\/tr><tr><td>$45 International Roaming<\/td><td>28 Days<\/td><td>10 GB<\/td><td>100 Mins<\/td><td>100 SMS<\/td><\/tr><tr><td>$75 International Roaming<\/td><td>186 Days<\/td><td>15 GB<\/td><td>100 Mins<\/td><td>100 SMS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>If you run out of data or minutes before the expiry date, you can simply purchase another pack on the Optus app. The new inclusions will be added to your account.<\/p>\n\n\n\n<p>Additionally, the pack&#8217;s duration begins the moment you purchase it. So, it is usually <strong>best to buy and activate the pack just before you depart or once you land<\/strong> in Vietnam to maximize your days.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs-1024x576.jpg\" alt=\"Optus prepaid international roaming packs\" class=\"wp-image-345986\" srcset=\"https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs-1024x576.jpg 1024w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs-300x169.jpg 300w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs-768x432.jpg 768w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs-1536x864.jpg 1536w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Optus-prepaid-international-roaming-packs.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Check out more details about Optus prepaid international roaming packs on the official website.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Optus-roaming-Vietnam-pay-as-you-go-charges\"><\/span>Optus roaming Vietnam pay-as-you-go charges&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you don\u2019t have an active pass or pack, or if you are on a plan that doesn&#8217;t support them, you will be charged <strong>Standard Roaming Rates<\/strong>. These are pay-as-you-go and can become extremely expensive.&nbsp;<\/p>\n\n\n\n<p>If you plan to use data frequently or make regular calls, purchasing a local <a href=\"https:\/\/esim.holafly.com\/sim-card\/vietnam-sim-card\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Vietnam SIM card<\/strong><\/a> or an <a href=\"https:\/\/esim.holafly.com\/how-to\/what-is-esim\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>eSIM<\/strong><\/a><strong> <\/strong>can be a more budget-friendly alternative.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Postpaid standard rates<\/h3>\n\n\n\n<p>For postpaid customers on plans without a daily pass, the costs in Vietnam are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Data:<\/strong> $1.00 per MB ($1,024 per GB)<\/li>\n\n\n\n<li><strong>Talk:<\/strong> $1.50 per minute&nbsp;<\/li>\n\n\n\n<li><strong>SMS:<\/strong> $0.50 per text<\/li>\n<\/ul>\n\n\n\n<p><strong>Warning:<\/strong> At <strong>$1.00 per MB<\/strong> on postpaid, a simple <strong>10-minute video call could cost you over $100. <\/strong>Always ensure a pass is active.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Prepaid standard rates<\/h3>\n\n\n\n<p>If you don\u2019t purchase an international roaming pack, you will be charged the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Data:<\/strong> $0.50 per MB (charged per 10KB)<\/li>\n\n\n\n<li><strong>Talk:<\/strong> $1 per minute<\/li>\n\n\n\n<li><strong>SMS:<\/strong> $0.50 per text<\/li>\n<\/ul>\n\n\n\n<p><strong>Warning:<\/strong> At <strong>$0.50 per MB<\/strong> on prepaid, even basic activities like browsing the web or downloading a small file can lead to high charges, as<strong> 1 GB of data would cost over $500.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How-to-activate-Optus-roaming-for-Vietnam\"><\/span>How to activate Optus roaming for Vietnam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Activating Optus roaming in Vietnam varies depending on whether you are on a postpaid or prepaid plan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For postpaid customers<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open the <strong>My Optus app<\/strong>.<\/li>\n\n\n\n<li>Go to the <strong>Service<\/strong> tab and select <strong>Settings<\/strong>.<\/li>\n\n\n\n<li>Tap <strong>International Roaming<\/strong> and ensure the toggle is <strong>ON<\/strong>.<\/li>\n\n\n\n<li>Check your eligibility for the<strong> Daily Roaming<\/strong> add-on in the same menu.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">For prepaid customers<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open the <strong>My Optus app<\/strong> and tap <strong>Recharge<\/strong>.<\/li>\n\n\n\n<li>Navigate to the <strong>Add-ons<\/strong> tab.<\/li>\n\n\n\n<li>Select your desired <strong>International Roaming Pack<\/strong> and pay using your stored card or credits.<\/li>\n\n\n\n<li>You can also text the word <strong>BAL<\/strong> to <strong>9999<\/strong> to check your balance, but purchasing is easiest via the app.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Final steps before you land<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>In Australia:<\/strong> Ensure &#8220;International Roaming&#8221; is enabled on your Optus account.<\/li>\n\n\n\n<li><strong>In Vietnam:<\/strong> Once you land, go to your phone&#8217;s <strong>Network\/Cellular Settings<\/strong> and turn <strong>Data Roaming ON<\/strong>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM-1024x576.jpg\" alt=\"Holafly Vietnam eSIM\" class=\"wp-image-345987\" srcset=\"https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM-1024x576.jpg 1024w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM-300x169.jpg 300w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM-768x432.jpg 768w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM-1536x864.jpg 1536w, https:\/\/media.holafly.com\/sites\/1\/2026\/03\/Holafly-Vietnam-eSIM.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Get unlimited data and flexible duration with the Holafly Vietnam eSIM via the Holafly app.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Stay-connected-in-Vietnam-with-Holafly\"><\/span>Stay connected in Vietnam with Holafly<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you are a heavy data user or if you don&#8217;t want to worry about daily 5 GB limits, <a href=\"https:\/\/esim.holafly.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Holafly eSIM<\/strong><\/a> is the premier alternative to Optus roaming in Vietnam. <strong>It offers unlimited data, reliable coverage, and flexible durations. <\/strong>The 24\/7 support is also available to assist whenever you need it.&nbsp;<\/p>\n\n\n\n<p>While the Optus daily roaming pass is a solid option, a <a href=\"https:\/\/esim.holafly.com\/esim-vietnam\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Holafly Vietnam eSIM<\/strong><\/a> offers significantly more value for data-heavy travelers. For roughly the same price as an Optus 5GB daily plan, Holafly provides <strong>unlimited data<\/strong> starting at just <strong>AU$5.90 to $2.43 per day<\/strong>. The savings increase the longer you stay.<\/p>\n\n\n\n<p>For digital nomads or those on extended trips, <a href=\"https:\/\/esim.holafly.com\/plans\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Holafly Plan<\/strong><\/a> offers monthly subscriptions or long-term plans that are significantly more budget-friendly than keeping an Australian roaming pass active for weeks.<\/p>\n\n\n  <div class=\"sidebar-blog banners-blog-wide invert-banner\">\n    <div\n      class=\"sidebar-blog-widget text-color-white \"\n              style=\"background-color: #E12B57\" >\n      <div>\n                              <div class=\"illustration\">\n              <img decoding=\"async\" src=\"https:\/\/media.holafly.com\/sites\/1\/2024\/11\/looking-CTA-illustration.svg\" alt=\"\">\n            <\/div>\n                        <\/div>\n      <div>\n                  <div class=\"title\">\n            <p>Limitless data, endless adventures<\/p>\n          <\/div>\n                          <div class=\"description\">\n            <br \/>\nStream, scroll, and share as you please. With Holafly, your data is always unlimited.<br \/>\n          <\/div>\n                                              <button class=\"btn-primary-l cta-primary\">\n              <a target=\"_blank\" href=\"https:\/\/esim.holafly.com\/esim-vietnam\/\">Buy Holafly Vietnam eSIM<\/a>            <\/button>\n                                <\/div>\n    <\/div>\n  <\/div>\n  \n\n\n\n<p class=\"has-background\" style=\"background-color:#fffabe\"><strong>Disclaimer: <\/strong>The data in this article is accurate as of March 10, 2026, and is subject to change.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to activate Optus roaming in Vietnam, including the Daily Roaming pass, check prepaid roaming pack rates, and avoid pay-as-you-go charges.<\/p>\n","protected":false},"author":295,"featured_media":345988,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[156],"tags":[],"class_list":["post-345969","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-roaming"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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