{"id":400457,"date":"2025-12-16T08:54:56","date_gmt":"2025-12-16T06:54:56","guid":{"rendered":"https:\/\/www.macobserver.com\/non-categorise\/pourquoi-ios-26-est-il-si-lent-causes-et-solutions\/"},"modified":"2025-09-18T08:40:26","modified_gmt":"2025-09-18T12:40:26","slug":"pourquoi-ios-26-est-il-si-lent-causes-et-solutions","status":"publish","type":"post","link":"https:\/\/www.macobserver.com\/fr\/guide-pratique\/pourquoi-ios-26-est-il-si-lent-causes-et-solutions\/","title":{"rendered":"Pourquoi iOS 26 est-il si lent ? Causes et solutions"},"content":{"rendered":"\n<p>Si votre iPhone semble plus lent apr\u00e8s la mise \u00e0 jour vers <strong>iOS 26<\/strong>, vous ne l&rsquo;imaginez pas. Certains utilisateurs signalent des animations saccad\u00e9es, un d\u00e9filement lent et m\u00eame des retards \u00e0 l&rsquo;ouverture des applications. Les mises \u00e0 jour iOS s&rsquo;accompagnent souvent de d\u00e9fauts, et les probl\u00e8mes de performance figurent g\u00e9n\u00e9ralement en haut de la liste. La bonne nouvelle : il existe des raisons claires \u00e0 ce ph\u00e9nom\u00e8ne et plusieurs moyens d&rsquo;acc\u00e9l\u00e9rer les choses.   <\/p>\n\n<div class=\"wp-block-yoast-seo-table-of-contents yoast-table-of-contents\"><h2>Table des mati\u00e8res<\/h2><ul><li><a  href=\"#h-why-ios-26-feels-laggy\" data-level=\"2\">Pourquoi iOS 26 semble lent<\/a><\/li><li><a  href=\"#h-how-to-fix-ios-26-lag\" data-level=\"2\">Comment corriger les ralentissements d&rsquo;iOS 26<\/a><ul><li><a  href=\"#h-1-wait-a-day-or-two\" data-level=\"3\">1. Attendez un jour ou deux<\/a><\/li><li><a  href=\"#h-2-restart-your-iphone\" data-level=\"3\">2. Red\u00e9marrez votre iPhone<\/a><\/li><li><a  href=\"#h-3-free-up-storage\" data-level=\"3\">3. Lib\u00e9rez de l&rsquo;espace de stockage<\/a><\/li><li><a  href=\"#h-4-reduce-animations\" data-level=\"3\">4. R\u00e9duisez les animations<\/a><\/li><li><a  href=\"#h-5-update-again-soon\" data-level=\"3\">5. Effectuez une nouvelle mise \u00e0 jour bient\u00f4t<\/a><\/li><li><a  href=\"#h-6-reset-settings-last-resort\" data-level=\"3\">6. R\u00e9initialisez les r\u00e9glages (dernier recours)<\/a><\/li><\/ul><\/li><li><a  href=\"#h-when-lag-is-more-than-lag\" data-level=\"2\">Quand les ralentissements d\u00e9passent les simples ralentissements<\/a><\/li><li><a  href=\"#h-should-you-downgrade\" data-level=\"2\">Devriez-vous r\u00e9trograder ?<\/a><\/li><li><a  href=\"#h-the-bottom-line\" data-level=\"2\">En r\u00e9sum\u00e9<\/a><\/li><\/ul><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"h-why-ios-26-feels-laggy\">Pourquoi iOS 26 semble lent<\/h2>\n\n<p>Les ralentissements apr\u00e8s une mise \u00e0 jour importante ne constituent pas toujours un probl\u00e8me permanent. Voici ce qui se passe en arri\u00e8re-plan : <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Processus en arri\u00e8re-plan<\/strong> : Apr\u00e8s l&rsquo;installation d&rsquo;iOS 26, votre iPhone r\u00e9indexe les fichiers, photos et applications. Cela consomme des ressources pendant un jour ou deux. <\/li>\n\n\n\n<li><strong>Animations et effets<\/strong> : Le nouveau design <strong>Liquid Glass<\/strong> et les transitions plus fluides sont agr\u00e9ables \u00e0 regarder, mais peuvent solliciter les anciens appareils. Si vous \u00eates sensible \u00e0 cela, <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-rendre-ios-26-moins-anime\/\">rendez iOS 26 moins anim\u00e9<\/a>. <\/li>\n\n\n\n<li><strong>Bogues dans la premi\u00e8re version<\/strong> : Chaque mise \u00e0 jour majeure s&rsquo;accompagne de son lot de dysfonctionnements. Apple les corrige g\u00e9n\u00e9ralement rapidement, mais vous pouvez suivre <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/tous-les-bugs-et-problemes-signales-dios-26-avec-leurs-correctifs\/\">tous les bogues signal\u00e9s d&rsquo;iOS 26 et leurs corrections ici<\/a>. <\/li>\n\n\n\n<li><strong>Probl\u00e8mes de batterie ou de chaleur<\/strong> : Un iPhone qui chauffe se ralentit pour \u00e9viter les dommages. Si vous avez remarqu\u00e9 cela, consultez notre guide pour <a  href=\"https:\/\/www.macobserver.com\/fr\/ios-fr\/comment-corriger-la-surchauffe-dios-26-solution-rapide\/\">corriger la surchauffe d&rsquo;iOS 26<\/a>. <\/li>\n\n\n\n<li><strong>Limites de stockage<\/strong> : Un espace libre insuffisant peut ralentir l&rsquo;ensemble, surtout apr\u00e8s le t\u00e9l\u00e9chargement d&rsquo;une mise \u00e0 jour importante.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-fix-ios-26-lag\">Comment corriger les ralentissements d&rsquo;iOS 26<\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"h-1-wait-a-day-or-two\">1. Attendez un jour ou deux<\/h3>\n\n<p>Juste apr\u00e8s une mise \u00e0 jour, votre iPhone est occup\u00e9 \u00e0 synchroniser et r\u00e9indexer en arri\u00e8re-plan. Les performances reviennent souvent \u00e0 la normale une fois cette t\u00e2che termin\u00e9e. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-2-restart-your-iphone\">2. Red\u00e9marrez votre iPhone<\/h3>\n\n<p>Un simple red\u00e9marrage efface la m\u00e9moire et les dysfonctionnements temporaires.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-3-free-up-storage\">3. Lib\u00e9rez de l&rsquo;espace de stockage<\/h3>\n\n<p>Acc\u00e9dez \u00e0 <strong>R\u00e9glages \u2192 G\u00e9n\u00e9ral \u2192 Stockage iPhone<\/strong>. Si vous approchez de la saturation, supprimez les applications inutilis\u00e9es ou d\u00e9chargez les photos.  <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"955\" height=\"1024\" src=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-955x1024.jpeg\" alt=\"stockage iphone\" class=\"wp-image-396356\" style=\"width:482px;height:auto\" srcset=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-955x1024.jpeg 955w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-280x300.jpeg 280w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-768x823.jpeg 768w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-196x210.jpeg 196w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-400x429.jpeg 400w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage-600x643.jpeg 600w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/iphone-storage.jpeg 1170w\" sizes=\"auto, (max-width: 955px) 100vw, 955px\" \/><\/figure>\n<\/div>\n<p>Vous pouvez \u00e9galement v\u00e9rifier la taille des mises \u00e0 jour par rapport \u00e0 votre stockage dans <a  href=\"https:\/\/www.macobserver.com\/news\/ios-26-download-size\/\">notre guide de la taille de t\u00e9l\u00e9chargement d&rsquo;iOS 26<\/a>.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-4-reduce-animations\">4. R\u00e9duisez les animations<\/h3>\n\n<p>Activez <strong>R\u00e9duire les animations<\/strong> sous <strong>R\u00e9glages \u2192 Accessibilit\u00e9 \u2192 Mouvement<\/strong>. Ou suivez notre guide \u00e9tape par \u00e9tape pour <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-rendre-ios-26-moins-anime\/\">rendre iOS 26 moins anim\u00e9<\/a>. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-5-update-again-soon\">5. Effectuez une nouvelle mise \u00e0 jour bient\u00f4t<\/h3>\n\n<p>Apple publie g\u00e9n\u00e9ralement de petits correctifs de suivi apr\u00e8s les mises \u00e0 jour majeures. Si vous avez eu des difficult\u00e9s \u00e0 installer iOS 26, consultez  <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/impossible-de-mettre-a-jour-vers-ios-26-voici-comment-resoudre-le-probleme\/\">impossible de mettre \u00e0 jour vers iOS 26 ? Voici comment le corriger <\/a>.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-6-reset-settings-last-resort\">6. R\u00e9initialisez les r\u00e9glages (dernier recours)<\/h3>\n\n<p>Acc\u00e9dez \u00e0 <strong>R\u00e9glages \u2192 G\u00e9n\u00e9ral \u2192 Transf\u00e9rer ou r\u00e9initialiser l&rsquo;iPhone \u2192 R\u00e9initialiser \u2192 R\u00e9initialiser tous les r\u00e9glages<\/strong>. Cela n&rsquo;effacera pas vos donn\u00e9es mais peut corriger d&rsquo;\u00e9tranges probl\u00e8mes de performance. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"777\" height=\"1024\" src=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-777x1024.jpeg\" alt=\"r&#xE9;initialiser les r&#xE9;glages r&#xE9;seau sur iPhone\" class=\"wp-image-394416\" style=\"width:504px;height:auto\" srcset=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-777x1024.jpeg 777w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-228x300.jpeg 228w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-768x1012.jpeg 768w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-159x210.jpeg 159w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-400x527.jpeg 400w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-600x791.jpeg 600w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone.jpeg 971w\" sizes=\"auto, (max-width: 777px) 100vw, 777px\" \/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\" id=\"h-when-lag-is-more-than-lag\">Quand les ralentissements d\u00e9passent les simples ralentissements<\/h2>\n\n<p>Parfois, les ralentissements sont li\u00e9s \u00e0 d&rsquo;autres probl\u00e8mes :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Si votre batterie se d\u00e9charge anormalement vite, consultez les <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/decharge-de-la-batterie-ios-26-7-ajustements-eprouves-pour-la-corriger\/\">corrections de d\u00e9charge de batterie iOS 26<\/a>.<\/li>\n\n\n\n<li>Si votre iPhone chauffe, utilisez notre <a  href=\"https:\/\/www.macobserver.com\/fr\/ios-fr\/comment-corriger-la-surchauffe-dios-26-solution-rapide\/\">guide de surchauffe iOS 26<\/a>.<\/li>\n\n\n\n<li>Si Messages ou FaceTime commencent \u00e0 dysfonctionner, voici comment <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-resoudre-les-problemes-dimessage-apres-la-mise-a-jour-ios-26\/\">corriger iMessage qui ne fonctionne pas apr\u00e8s iOS 26<\/a>.<\/li>\n<\/ul>\n\n<p>Ces probl\u00e8mes se chevauchent souvent avec les ralentissements, car la chaleur et la sollicitation de la batterie ralentissent toutes deux votre t\u00e9l\u00e9phone.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-should-you-downgrade\">Devriez-vous r\u00e9trograder ?<\/h2>\n\n<p>Si les performances ne s&rsquo;am\u00e9liorent pas et que vous ne pouvez pas vivre avec, vous pouvez revenir en arri\u00e8re. Apple signe encore les anciennes versions pendant une courte p\u00e9riode, vous pouvez donc <a  href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-retrograder-dios-26-vers-ios-18-en-toute-securite-5-methodes\/\">r\u00e9trograder d&rsquo;iOS 26 vers iOS 18 en toute s\u00e9curit\u00e9<\/a>. <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-the-bottom-line\">En r\u00e9sum\u00e9<\/h2>\n\n<p>Les ralentissements d&rsquo;iOS 26 sont assez insupportables, mais ils sont g\u00e9n\u00e9ralement dus \u00e0 l&rsquo;activit\u00e9 en arri\u00e8re-plan, aux nouvelles animations tape-\u00e0-l&rsquo;\u0153il ou aux bogues de premi\u00e8re version. Laissez un peu de temps, red\u00e9marrez votre appareil, r\u00e9duisez le stockage et diminuez les animations. La plupart des iPhone retrouveront leur fluidit\u00e9 une fois la poussi\u00e8re de la mise \u00e0 jour retomb\u00e9e. Sinon, vous pouvez toujours r\u00e9trograder ou attendre le prochain correctif d&rsquo;Apple.   <\/p>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si votre iPhone semble plus lent apr\u00e8s la mise \u00e0 jour vers iOS 26, vous ne l&rsquo;imaginez pas. Certains utilisateurs signalent des animations saccad\u00e9es, un d\u00e9filement lent et m\u00eame des retards \u00e0 l&rsquo;ouverture des applications. Les mises \u00e0 jour iOS s&rsquo;accompagnent souvent de d\u00e9fauts, et les probl\u00e8mes de performance figurent g\u00e9n\u00e9ralement en haut de la [&hellip;]<\/p>\n","protected":false},"author":18939,"featured_media":400291,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[82137,82101],"tags":[82233],"work":[],"class_list":["post-400457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide-pratique","category-non-categorise","tag-mises-a-jour-ios-26"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Pourquoi iOS 26 est-il si lent ? Causes et solutions<\/title>\n<meta name=\"description\" content=\"Si votre iPhone est plus lent apr\u00e8s iOS 26, c&#039;est r\u00e9el. Certains signalent animations saccad\u00e9es et d\u00e9filement lent.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/pourquoi-ios-26-est-il-si-lent-causes-et-solutions\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pourquoi iOS 26 est-il si lent ? Causes et solutions\" \/>\n<meta property=\"og:description\" content=\"Si votre iPhone est plus lent apr\u00e8s iOS 26, c&#039;est r\u00e9el. 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