{"id":6336,"date":"2022-11-12T00:15:27","date_gmt":"2022-11-12T00:15:27","guid":{"rendered":"https:\/\/www.techrounder.com\/blog\/iphone-call-screen-background-not-changing-solution\/"},"modified":"2026-01-04T11:36:57","modified_gmt":"2026-01-04T11:36:57","slug":"iphone-call-screen-background-not-changing-solution","status":"publish","type":"post","link":"https:\/\/www.techrounder.com\/blog\/iphone-call-screen-background-not-changing-solution\/","title":{"rendered":"How to Fix If iPhone Calling Screen Background Not Changing?"},"content":{"rendered":"<p>With the release of <strong>iOS 18<\/strong>, Apple has once again expanded its customization options, giving users even more control over their iPhone experience. One of the most loved features is the ability to personalize the <strong>call screen background<\/strong>, allowing users to set unique images, colors, or posters for their contacts.<\/p>\n<p>However, a <strong>persistent issue<\/strong> has been reported by many users, where the call screen background does not update even after changing the wallpaper. This problem has been notably affecting devices updated from <strong>iOS 17 to iOS 18<\/strong>, particularly on <strong>iPhone 15 and the latest iPhone 16 series<\/strong>.<\/p>\n<p>In this updated guide for <strong>2025<\/strong>, we will explore the causes of this issue and provide <strong>five reliable fixes<\/strong> to ensure your iPhone\u2019s <a href=\"https:\/\/www.techrounder.com\/blog\/apple\/make-facetime-call-on-android-with-mac-iphone\/\">call screen<\/a> background updates properly.<\/p>\n<hr \/>\n<h2>What is the iPhone Call Screen Background Issue<\/h2>\n<h3>What is the Call Screen Background?<\/h3>\n<p>The <strong>call screen background<\/strong> is the image displayed when making or receiving calls. Typically, it mirrors the wallpaper set on the device, with a blurred version appearing in the background of the call interface.<\/p>\n<h3>Who is Affected?<\/h3>\n<ul>\n<li><strong>Affected iOS Versions:<\/strong> iOS 18.0 &#8211; 18.3<\/li>\n<li><strong>Commonly Affected Models:<\/strong> iPhone 15 Pro\/Max, iPhone 16 series<\/li>\n<li><strong>Trigger Actions:<\/strong> Changing wallpaper via Settings &gt; Wallpaper or Lock Screen customization<\/li>\n<\/ul>\n<h3><span style=\"font-size: 16px;\">Why Does This Happen?<\/span><\/h3>\n<p>Apple\u2019s wallpaper system operates through <strong>three core subsystems<\/strong>:<\/p>\n<ol>\n<li><strong>SpringBoard<\/strong> (Manages Lock Screen and Home Screen wallpapers)<\/li>\n<li><strong>TelephonyUI<\/strong> (Handles the call screen rendering)<\/li>\n<li><strong>CoreAnimation<\/strong> (Processes visual effects, including blur and transitions)<\/li>\n<\/ol>\n<p>The <strong>bug occurs<\/strong> because:<\/p>\n<ul>\n<li>Changing the wallpaper via <strong>Settings<\/strong> or <strong>Lock Screen customization<\/strong> updates <strong>SpringBoard<\/strong> but fails to notify <strong>TelephonyUI<\/strong>.<\/li>\n<li><strong>CoreAnimation<\/strong> retains cached blur effects from the previous wallpaper, causing the outdated background to persist on the call screen.<\/li>\n<\/ul>\n<hr \/>\n<h2>5 Fixes to Update the Call Screen Background<\/h2>\n<h3>1. Use the Photos App to Change Wallpaper<\/h3>\n<p><strong>Why it works:<\/strong> This method bypasses SpringBoard and directly updates all three subsystems.<\/p>\n<h4><strong>Steps to Fix:<\/strong><\/h4>\n<ol>\n<li>Open the <strong>Photos<\/strong> app on your iPhone.<\/li>\n<li>Select an image to set as the new wallpaper.<\/li>\n<li>Tap the <strong>Share<\/strong> icon (bottom left corner).<\/li>\n<li>Scroll down and select <strong>Use as Wallpaper<\/strong>.<\/li>\n<li>Ensure <strong>Set Both<\/strong> is enabled to update both Lock and Home Screen.<\/li>\n<li>Tap <strong>Done<\/strong> to confirm.<\/li>\n<\/ol>\n<p>\u2705 <strong>Your call screen background should now be updated!<\/strong><\/p>\n<hr \/>\n<h3>2. Force Refresh TelephonyUI<\/h3>\n<p><strong>Why it works:<\/strong> This forces a refresh of the call UI subsystem, clearing outdated cached data.<\/p>\n<h4><strong>Steps to Fix:<\/strong><\/h4>\n<ol>\n<li>Open the dialer and enter <code><strong>*5005*76786#<\/strong><\/code> (This clears the call cache).<\/li>\n<li>Perform a force restart:\n<ul>\n<li>Press <strong>Volume Up<\/strong> \u2192 <strong>Volume Down<\/strong> \u2192 Hold <strong>Side Button<\/strong> until the Apple logo appears.<\/li>\n<\/ul>\n<\/li>\n<li>Reapply the wallpaper using the <strong>Photos App<\/strong> method above.<\/li>\n<\/ol>\n<hr \/>\n<h3>3. Update to the Latest iOS Version<\/h3>\n<p><strong>Why it works:<\/strong> Apple has acknowledged and fixed similar issues in past updates, and iOS 18.3 includes patches for call screen rendering bugs.<\/p>\n<h4><strong>Recommended Fix Based on iOS Version:<\/strong><\/h4>\n<table>\n<tbody>\n<tr>\n<td>iOS Version<\/td>\n<td>Solution<\/td>\n<\/tr>\n<tr>\n<td>18.0 &#8211; 18.1<\/td>\n<td>Update to 18.2+<\/td>\n<\/tr>\n<tr>\n<td>18.2 &#8211; 18.3<\/td>\n<td>Disable &#8220;Persistent Blur&#8221; in settings<\/td>\n<\/tr>\n<tr>\n<td>18.3+<\/td>\n<td>Enable &#8220;Sync Call Background&#8221;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>To check for updates:<\/p>\n<ul>\n<li>Go to <strong>Settings<\/strong> &gt; <strong>General<\/strong> &gt; <strong>Software Update<\/strong> and install any available updates.<\/li>\n<\/ul>\n<hr \/>\n<h3>4. Reset All Settings (Last Resort \u2013 50% Success Rate)<\/h3>\n<p>If the issue persists after multiple attempts, resetting all settings can fix system conflicts.<\/p>\n<h4><strong>Steps to Reset:<\/strong><\/h4>\n<ol>\n<li>Open <strong>Settings<\/strong> &gt; <strong>General<\/strong> &gt; <strong>Transfer or Reset iPhone<\/strong>.<\/li>\n<li>Tap <strong>Reset<\/strong> &gt; <strong>Reset All Settings<\/strong> (\u26a0\ufe0f Do NOT select &#8220;Erase All Content&#8221;).<\/li>\n<li>Restart your iPhone and reapply the <a href=\"https:\/\/www.techrounder.com\/blog\/tools\/crello-review-graphic-design-software-for-social-media-marketing\/\">wallpaper<\/a> using the <strong>Photos App<\/strong> method.<\/li>\n<\/ol>\n<hr \/>\n<h3>5. Advanced Troubleshooting: When to Contact Apple Support<\/h3>\n<p>If you experience <strong>any of the following issues<\/strong>, reach out to Apple Support:<\/p>\n<ul>\n<li>Call screen background is <strong>stuck<\/strong> even after multiple fixes.<\/li>\n<li>The call screen displays a <strong>checkerboard pattern<\/strong>.<\/li>\n<li>You are using <strong>iOS 18.3+<\/strong> and the issue persists despite all attempts.<\/li>\n<\/ul>\n<p>Before contacting support:<\/p>\n<ul>\n<li>Ensure carrier settings are updated via <strong>Settings &gt; General &gt; About<\/strong>.<\/li>\n<li>Try resetting network settings: <strong>Settings &gt; General &gt; Reset &gt; Reset Network Settings<\/strong>.<\/li>\n<\/ul>\n<hr \/>\n<h2>Prevention Tips: How to Avoid This Issue in the Future<\/h2>\n<table>\n<tbody>\n<tr>\n<td>Method<\/td>\n<td>Updates Call BG?<\/td>\n<td>Risk Factor<\/td>\n<td>Best Use Case<\/td>\n<\/tr>\n<tr>\n<td><strong>Photos App<\/strong><\/td>\n<td>\u2705 Yes<\/td>\n<td>\ud83d\udd39 Low<\/td>\n<td>For permanent wallpaper changes<\/td>\n<\/tr>\n<tr>\n<td><strong>Focus Filters<\/strong><\/td>\n<td>\u274c No<\/td>\n<td>\ud83d\udd3a High<\/td>\n<td>Temporary setups<\/td>\n<\/tr>\n<tr>\n<td><strong>Settings App<\/strong><\/td>\n<td>\u274c No<\/td>\n<td>\ud83d\udd39 Medium<\/td>\n<td>Quick wallpaper experiments<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3 Essential Tips for Future Prevention:<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Avoid using <strong>Lock Screen Editor<\/strong> for major wallpaper changes.<\/li>\n<li>Disable <strong>Focus Mode wallpaper automation<\/strong> while troubleshooting.<\/li>\n<li>Backup wallpapers to <strong>Files app<\/strong> with date prefixes for easy recovery.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Conclusion: Did These Fixes Work for You?<\/h2>\n<p>We hope this guide helped you resolve the call screen background issue on your iPhone. If you tried any of the above methods, let us know which one worked for you!<\/p>\n","protected":false},"excerpt":{"rendered":"With the release of iOS 18, Apple has once again expanded its customization options, giving users even more&hellip;","protected":false},"author":2,"featured_media":2319,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_display_header_overlay":false,"csco_singular_sidebar":"","csco_page_header_type":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"csco_post_video_bg_volume":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-6336","post","type-post","status-publish","format-standard","has-post-thumbnail","category-tips","cs-entry","cs-video-wrap"],"_links":{"self":[{"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/posts\/6336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/comments?post=6336"}],"version-history":[{"count":0,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/posts\/6336\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/media\/2319"}],"wp:attachment":[{"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/media?parent=6336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/categories?post=6336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techrounder.com\/blog\/wp-json\/wp\/v2\/tags?post=6336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}