{"id":13079,"date":"2022-05-13T22:09:00","date_gmt":"2022-05-13T14:09:00","guid":{"rendered":"https:\/\/rewa.tech\/iphone-xr-cannot-be-activated\/"},"modified":"2025-07-10T11:38:15","modified_gmt":"2025-07-10T03:38:15","slug":"iphone-xr-unable-to-activate","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/iphone-xr-unable-to-activate\/","title":{"rendered":"How to Fix iPhone XR Unable to Activate (NFC Chip Repair Guide)"},"content":{"rendered":"<p>When trying to activate your iPhone XR, are you stuck on the activation screen no matter what you try? You&#8217;re not alone. Many users face the frustrating &#8220;iPhone XR unable to activate&#8221; issue, which can result from system, hardware, or chip-level problems. In this article, we&#8217;ll guide you through the exact steps to troubleshoot and repair the problem \u2014 including how a faulty NFC chip could be to blame and how to fix it like a pro. Whether you&#8217;re a technician, repair shop owner, or tech-savvy DIYer, this guide will walk you through a real-world case and help you restore full functionality to the device.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Reasons For iPhone XR Unable to Activate<\/h2>\n\n\n\n<p>The iPhone XR activation failure can be caused by one or more of the following issues:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Outdated iOS system<\/strong> \u2013 The phone may need the latest iOS version to complete activation.<\/li>\n\n\n\n<li><strong>Baseband issue<\/strong> \u2013 If the baseband chip fails, the phone may not get recognized by Apple\u2019s servers.<\/li>\n\n\n\n<li><strong>NFC chip issue<\/strong> \u2013 If the <strong>Near Field Communication (NFC)<\/strong> chip is faulty or improperly soldered, activation can fail.<\/li>\n\n\n\n<li><strong>Mismatched NAND serial number<\/strong> \u2013 If the NAND\u2019s serial number doesn\u2019t match the Wi-Fi\/Bluetooth addresses, activation will be blocked. (Typically occurs after board-level repairs.)<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image has-custom-border is-style-default wp-duotone-purple-yellow\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_XR_Cannot_Be_Activated.png\" alt=\"iPhone XR unable to activate\" class=\"has-border-color has-black-border-color\" style=\"border-width:2px;border-radius:10px\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fault Exclusion Process<\/h2>\n\n\n\n<p>As the customer has not reported the device repaired, the problem caused by the Wi-Fi and Bluetooth addresses not matching can be excluded.<\/p>\n\n\n\n<p>Next, we observe the <strong>SN (Serial Number), IMEI<\/strong>et <strong>MEID<\/strong> during the activation screen, which means the <strong>baseband is functioning properly<\/strong>.<\/p>\n\n\n\n<p>Now we\u2019re left with two possibilities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An outdated iOS system<\/li>\n\n\n\n<li>A hardware fault in the NFC circuit<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: iOS Restore with iTunes<\/h2>\n\n\n\n<p>We attempt a restore using <strong>iTunes<\/strong> to rule out software issues. After restoring, the phone still fails to activate, suggesting the iOS version is not the culprit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Inspect the NFC Circuit<\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<p>We proceed to disassemble the iPhone XR and remove the <strong>carte m\u00e8re<\/strong>. On close inspection, it becomes evident that the <strong>NFC chip has been previously worked on<\/strong> \u2014 contradicting the customer\u2019s claim.<\/p>\n\n\n\n<p>The soldering is poor, which could be causing a short or disruption in the NFC communication line.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image wp-duotone-dark-grayscale\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/NFC_chip_poor_soldering.png\" alt=\"carte m\u00e8re iphone xr\" style=\"aspect-ratio:1;object-fit:cover\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3: Diode Value Testing<\/h2>\n\n\n\n<p>We remove the <strong>NFC chip<\/strong> and measure the diode values on the PCB (Printed Circuit Board) pads.<\/p>\n\n\n\n<p>We find that the <strong>PP_NFC_VREF<\/strong> pin is returning a diode value of <strong>226<\/strong> \u2014 which is abnormal. It should read <strong>infinite (open)<\/strong> under normal conditions.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/NFC_Chip_Diode_Value_Measurement.png\" alt=\"diagram of iphone xr\" title=\"\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Fixing the Problem<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">To fix this:<\/h4>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Remove the capacitor <strong>C7534_S<\/strong> near the PP_NFC_VREF rail<\/li>\n\n\n\n<li>Re-solder the <strong>NFC chip<\/strong> carefully with proper technique<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image has-custom-border\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/C7534_S.png\" alt=\"carte m\u00e8re iphone xr\" style=\"border-width:1px;aspect-ratio:1;object-fit:cover\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>After reassembly, the <strong>diode value returns to normal<\/strong>, and the iPhone XR <strong>activates successfully<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Outils et pi\u00e8ces utilis\u00e9s :<\/h2>\n\n\n\n<p><strong>Outils :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Soldering station or rework station<\/li>\n\n\n\n<li>Multimeter (for diode mode testing)<\/li>\n\n\n\n<li>iTunes (for software restore)<\/li>\n\n\n\n<li>Microscope (for inspecting soldering quality)<\/li>\n\n\n\n<li>Precision tweezers and tools for chip-level repair<\/li>\n<\/ul>\n\n\n\n<p><strong>Pi\u00e8ces d\u00e9tach\u00e9es :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NFC chip (reused in this case)<\/li>\n\n\n\n<li>Condensateur <strong>C7534_S<\/strong> (may need replacement if damaged)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion :<\/h2>\n\n\n\n<p>Si votre <strong>iPhone XR unable to activate<\/strong>, don&#8217;t rush to replace major components or write off the device. As we demonstrated, a poorly soldered <strong>NFC chip<\/strong> or faulty <strong>PP_NFC_VREF<\/strong> rail could be the hidden culprit. By methodically eliminating possible causes and using proper diagnostic techniques, even complex issues like this can be resolved.<\/p>\n\n\n\n<p>This guide is especially helpful for <strong>repair professionals, service centers, and advanced DIYers<\/strong> who are confident working with <strong>motherboard-level repairs<\/strong>.<\/p>\n\n\n\n<p>\ud83d\udcda <strong>Want to learn more advanced repair skills like this?<\/strong><br>\ud83d\udc49 <strong><a href=\"https:\/\/academy.rewa.tech\">Join REWA Academy<\/a><\/strong> for in-depth training and certification in phone board repair and microsoldering.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>When trying to activate your iPhone XR, are you stuck on the activation screen no matter what you try? You&#8217;re not alone. Many users face the frustrating &#8220;iPhone XR unable to activate&#8221; issue, which can result from system, hardware, or chip-level problems. In this article, we&#8217;ll guide you through the exact steps to troubleshoot and [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":13080,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[780],"tags":[],"class_list":["post-13079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iphone-repair-cases"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/13079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/comments?post=13079"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/13079\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media\/13080"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media?parent=13079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/categories?post=13079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/tags?post=13079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}