{"id":1661,"date":"2026-04-03T17:59:15","date_gmt":"2026-04-03T17:59:15","guid":{"rendered":"https:\/\/api.vostra.world\/index.php\/2026\/04\/03\/us-dual-sim-how-to-use-esim-and-sim-card-at-the-same\/"},"modified":"2026-04-03T17:59:15","modified_gmt":"2026-04-03T17:59:15","slug":"us-dual-sim-how-to-use-esim-and-sim-card-at-the-same","status":"publish","type":"post","link":"https:\/\/api.vostra.world\/index.php\/2026\/04\/03\/us-dual-sim-how-to-use-esim-and-sim-card-at-the-same\/","title":{"rendered":"Dual SIM: how to use eSIM and SIM card at the same time?"},"content":{"rendered":"<p>The eSIM is a game-changer for connected travelers. No more juggling traditional SIM cards upon arrival at your destination: everything is done remotely, directly from your smartphone. Discover the real differences between physical SIM cards and eSIMs, and how to use both technologies simultaneously when traveling abroad.<\/p>\n<nav class=\"table-of-contents\">\n<ul>\n<li><a href=\"#differences-esim-sim\">Differences between SIM card and eSIM<\/a><\/li>\n<li><a href=\"#utiliser-les-deux\">Using a SIM card and an eSIM simultaneously<\/a><\/li>\n<li><a href=\"#activation-esim\">Activating and configuring an eSIM step-by-step<\/a><\/li>\n<li><a href=\"#bascule-sim-esim\">Switching from an eSIM to a physical SIM (and vice versa)<\/a><\/li>\n<li><a href=\"#compatibilite-smartphones\">Is your phone compatible with eSIM?<\/a><\/li>\n<li><a href=\"#faq\">FAQ<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"differences-esim-sim\">Differences between physical SIM card and eSIM<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-726\" src=\"https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/difference-entre-carte-sim-et-esim.jpg\" alt=\"Understand the differences between SIM card and eSIM\" width=\"1000\" height=\"667\" srcset=\"https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/difference-entre-carte-sim-et-esim.jpg 1000w, https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/difference-entre-carte-sim-et-esim-300x200.jpg 300w, https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/difference-entre-carte-sim-et-esim-768x512.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Unlike traditional SIM cards, <a href=\"https:\/\/api.vostra.world\/index.php\/2025\/01\/24\/comment-acheter-votre-premiere-esim\/\" target=\"_blank\" rel=\"noopener\">eSIMs<\/a> are digital SIM cards directly integrated into the device. This allows for faster and more secure setup.<\/p>\n<p>You can install an eSIM without going through a point of sale or waiting for postal delivery. Since the eSIM is embedded in the phone, it cannot be removed or stolen.<\/p>\n<p>No physical manipulation means fewer technical problems related to wear and tear or poor contacts. eSIMs are more <strong>eco-friendly<\/strong>, and therefore more sustainable, as they avoid plastic production and unnecessary shipping.<\/p>\n<h2 id=\"utiliser-les-deux\">Using a SIM card and an eSIM simultaneously: how-to guide<\/h2>\n<p>If your smartphone is <strong>Dual SIM compatible<\/strong>, you can use both a physical SIM card and an eSIM. This can be practical for separating professional and personal use, or for activating a local line during a trip while keeping your main line active.<\/p>\n<h3><span style=\"color: #0000ff;\">1. Label your plans<\/span><\/h3>\n<p>To avoid confusion, assign a name to each line (e.g., \u201cSIM France\u201d and \u201ceSIM Thailand\u201d).<\/p>\n<p><strong>On iOS:<\/strong><\/p>\n<ul>\n<li>Open <strong>Settings<\/strong> > <strong>Cellular<\/strong>.<\/li>\n<li>Tap on your eSIM, enter a custom name, then save.<\/li>\n<\/ul>\n<p><strong>On Android:<\/strong><\/p>\n<ul>\n<li>Go to <strong>Settings<\/strong> > <strong>Network &#038; internet<\/strong> > <strong>SIM cards<\/strong>.<\/li>\n<li>Select your eSIM and name it.<\/li>\n<\/ul>\n<h3><span style=\"color: #0000ff;\">2. Activate your eSIM<\/span><\/h3>\n<p><strong>On iOS:<\/strong><\/p>\n<ul>\n<li>Open <strong>Settings<\/strong> > <strong>Cellular<\/strong>.<\/li>\n<li>Select your eSIM.<\/li>\n<li>Activate <strong>Turn On This Line<\/strong> and <strong>Data Roaming<\/strong>.<\/li>\n<li>Choose a supported network if necessary.<\/li>\n<\/ul>\n<p><strong>On Android:<\/strong><\/p>\n<ul>\n<li>Go to <strong>Settings<\/strong> > <strong>Network &#038; internet<\/strong> > <strong>Mobile network<\/strong>.<\/li>\n<li>Activate the eSIM, <strong>Mobile data<\/strong>, and <strong>Roaming<\/strong>.<\/li>\n<\/ul>\n<h3><span style=\"color: #0000ff;\">3. Set your default lines<\/span><\/h3>\n<h4>Voice calls:<\/h4>\n<p>Choose which card to use for outgoing calls and SMS.<\/p>\n<ul>\n<li>iOS: <strong>Settings<\/strong> > <strong>Cellular<\/strong> > <strong>Default Voice Line<\/strong>.<\/li>\n<li>Android: <strong>Settings<\/strong> > <strong>Network<\/strong> > <strong>SIM card<\/strong> > <strong>Calls\/SMS<\/strong>.<\/li>\n<\/ul>\n<h4>Mobile data:<\/h4>\n<p>Choose the line to use for internet access.<\/p>\n<ul>\n<li>iOS: <strong>Settings<\/strong> > <strong>Mobile data<\/strong> > select eSIM.<\/li>\n<li>Android: <strong>Settings<\/strong> > <strong>Mobile network<\/strong> > select eSIM.<\/li>\n<\/ul>\n<h2 id=\"bascule-sim-esim\">Switching from an eSIM to a physical SIM card (or vice versa)<\/h2>\n<p>You can temporarily deactivate your eSIM at any time, for example after a trip, and reactivate your usual SIM card for calls and data. This avoids having to reinstall an eSIM profile later.<\/p>\n<h3>Deactivate an eSIM<\/h3>\n<ul>\n<li>iOS: <strong>Settings<\/strong> > <strong>Mobile Data<\/strong> > eSIM > deactivate.<\/li>\n<li>Android: <strong>Settings<\/strong> > <strong>Connections<\/strong> > <strong>Mobile network<\/strong> > deactivate eSIM.<\/li>\n<\/ul>\n<h2 id=\"compatibilite-smartphones\">Is your phone compatible with eSIMs?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-727\" src=\"https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/Fonctionnement-de-double-SIM.jpg\" alt=\"Using an eSIM-compatible phone while traveling\" width=\"1000\" height=\"667\" srcset=\"https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/Fonctionnement-de-double-SIM.jpg 1000w, https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/Fonctionnement-de-double-SIM-300x200.jpg 300w, https:\/\/api.vostra.world\/wp-content\/uploads\/2025\/03\/Fonctionnement-de-double-SIM-768x512.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Most recent smartphones (since 2018) are compatible with eSIM technology. However, your device must also be <strong>unlocked<\/strong> (not tied to a specific carrier).<\/p>\n<p>To check, consult the official list of compatible models or dial <code>*#06#<\/code> on your device to see if it displays an EID (eSIM identifier) number.<\/p>\n<p>Dual SIM smartphones also allow you to combine an eSIM and a physical SIM in parallel. This is ideal for travelers who want a local line while keeping their main number active.<\/p>\n<h2 id=\"faq\">FAQ<\/h2>\n<details>\n<summary>Can I use my main SIM card for calls while using an eSIM for internet?<\/summary>\n<div class=\"answer\">Yes, this is entirely possible if your phone supports dual SIM. You can configure your eSIM to handle mobile data (internet), while keeping your physical SIM card for calls and SMS. Simply set the default lines in your phone&rsquo;s network settings.<\/div>\n<\/details>\n<details>\n<summary>How many eSIM profiles can I save on a single phone?<\/summary>\n<div class=\"answer\">Most modern smartphones allow you to save between 5 and 8 eSIM profiles. However, only one can be active at a time. This allows you to keep multiple international plans and activate them depending on the country you are in.<\/div>\n<\/details>\n<details>\n<summary>What happens if I change phones? Will my eSIM still work?<\/summary>\n<div class=\"answer\">The eSIM is linked to a single device. If you change phones, you will generally need to download a new eSIM profile via your carrier or a platform like Vostra. This is quick, but it requires a new activation.<\/div>\n<\/details>\n<details>\n<summary>How do I prioritize one line for calls, and another for internet?<\/summary>\n<div class=\"answer\">In your phone&rsquo;s settings, you can choose which line to use for mobile data, for voice calls, and for SMS. These options are found in the \u00ab\u00a0Mobile network\u00a0\u00bb or \u00ab\u00a0Cellular data\u00a0\u00bb section. You can change these settings at any time.<\/div>\n<\/details>\n<details>\n<summary>How do I delete an eSIM that I no longer use?<\/summary>\n<div class=\"answer\">You can delete an eSIM profile in your phone&rsquo;s settings, in the \u00ab\u00a0Mobile Data\u00a0\u00bb or \u00ab\u00a0Mobile Network\u00a0\u00bb section. Please note that deletion is permanent: if you wish to use it again, you will need to request a new QR code or reactivation via your provider.<\/div>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>The eSIM is a game-changer for connected travelers. No more fumbling with traditional SIM cards upon arrival at your destination: everything is done remotely, directly from your smartphone. Discover the real differences between physical SIM cards and eSIMs, and how to use both technologies simultaneously while you travel [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1511,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[217],"tags":[816],"class_list":["post-1661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-esim-us","tag-us-dual-sim"],"_links":{"self":[{"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/posts\/1661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/comments?post=1661"}],"version-history":[{"count":0,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/posts\/1661\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/media\/1511"}],"wp:attachment":[{"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/media?parent=1661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/categories?post=1661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/api.vostra.world\/index.php\/wp-json\/wp\/v2\/tags?post=1661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}