{"id":42831,"date":"2025-08-18T12:17:24","date_gmt":"2025-08-18T11:17:24","guid":{"rendered":"https:\/\/www.ispreview.co.uk\/?p=42831"},"modified":"2025-08-18T14:02:08","modified_gmt":"2025-08-18T13:02:08","slug":"customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html","title":{"rendered":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE"},"content":{"rendered":"<p>Mobile operator <a href=\"https:\/\/www.mozillion.com\/\" target=\"_blank\" rel=\"noopener\">Mozillion<\/a>, which is a virtual network operator (mvno) that harnesses <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/eebroadband\" rel=\"nofollow\" target=\"_blank\">EE<\/a>&#8217;s national <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/4g\">4G<\/a> and <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/5g\">5G<\/a> platform, has confirmed that some of its customers are experiencing ongoing connectivity problems (i.e. it stopped working) with their <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/wifi\">WiFi<\/a> Calling service.<!--more--><\/p>\n<p>In case anybody doesn&#8217;t already know &#8211; <strong>Wi-Fi Calling<\/strong> (<em>VoWiFi<\/em>) enables consumers with a supporting Smartphone and mobile operator to harness their home broadband connection or another <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/wifi\">WiFi<\/a> network to make mobile voice calls, instead of using your mobile (2G, <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/4g\">4G<\/a> or <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/5g\">5G<\/a>) network. The feature is extremely useful, particularly when away from a good mobile signal, but support can still be patchy between different networks and devices.<\/p>\n<p>The problem with this service on <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/mozillion\" rel=\"nofollow\" target=\"_blank\">Mozillion<\/a> appears to have started a couple of weeks ago, after some customers began noticing that <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/wifi\">WiFi<\/a> Calling seemed to have stopped working. &#8220;<em>I have tried enabling and disabled Wi-Fi calling, turning the SIM card on and off, turning the phone on and off, but this has not resolved the problem<\/em>,&#8221; said John, one of those to report the problem.<\/p>\n<p>The provider initially attempted to resolve the problem for some customers by resetting their SIMs, but this did not fix it. Customers who attempt to raise the issue with <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/mozillion\" rel=\"nofollow\" target=\"_blank\">Mozillion<\/a> are now being given the following canned statement.<\/p>\n<blockquote class=\"bq1\"><p><strong><a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/mozillion\" rel=\"nofollow\" target=\"_blank\">Mozillion<\/a> Statement on Wi-Fi Calling Problem<\/strong><\/p>\n<p>&#8220;We are aware of a temporary network issue affecting WiFi Calling on some numbers. If you are unable to make calls over WiFi, please temporarily disable this function in your phone&#8217;s settings.&#8221;<\/p><\/blockquote>\n<p>We&#8217;ve contacted Mozillion in the hope of getting a bit more information and hopefully some indication of when it might be resolved.<\/p>\n<p><strong>UPDATE 2:01pm<\/strong><\/p>\n<p>The following comment has arrived.<\/p>\n<blockquote class=\"bq1\"><p><strong>A Spokesperson for Mozillion told ISPreview:<\/strong><\/p>\n<p>&#8220;We are aware of a few customers currently unable to use the WiFi Calling feature on Mozillion since 13\/8\/25. The engineers and <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/eebroadband\" rel=\"nofollow\" target=\"_blank\">EE<\/a>\/<a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/britishtelecom\" rel=\"nofollow\" target=\"_blank\">BT<\/a> are currently investigating the cause of this to resolve it as soon as possible. We are asking affected users to confirm their phone model and which broadband\/WiFi provider that they are connected too in order to assist with resolving the problem.<\/p>\n<p>We will be notifying all customers once the problem is resolved and apologise for any inconvenience caused. Other services, including data, texts and making normal mobile calls over on our network are unaffected by this issue.&#8221;<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE&#8217;s national 4G and 5G platform, has confirmed that some of its customers are experiencing ongoing connectivity problems (i.e. it stopped working) with their WiFi Calling service.<\/p>\n","protected":false},"author":1,"featured_media":42834,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[61,406,405,81,476],"class_list":["post-42831","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uk_isp_news","tag-4g","tag-5g","tag-ee","tag-voip","tag-wifi"],"share_on_mastodon":{"url":"https:\/\/mastodon.social\/@ispreview\/115049493120254822","error":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK<\/title>\n<meta name=\"description\" content=\"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE&#039;s national 4G and 5G platform, has confirmed that some of its\" \/>\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.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK\" \/>\n<meta property=\"og:description\" content=\"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE&#039;s national 4G and 5G platform, has confirmed that some of its\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\" \/>\n<meta property=\"og:site_name\" content=\"ISPreview UK\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ispreview\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/ispreview\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-18T11:17:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-18T13:02:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Mark Jackson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ispreview\" \/>\n<meta name=\"twitter:site\" content=\"@ispreview\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Jackson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\"},\"author\":{\"name\":\"Mark Jackson\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#\\\/schema\\\/person\\\/de66a8b4e937c21c80e443d1bf9c35d5\"},\"headline\":\"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE\",\"datePublished\":\"2025-08-18T11:17:24+00:00\",\"dateModified\":\"2025-08-18T13:02:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\"},\"wordCount\":401,\"commentCount\":13,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/nggallery_import\\\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp\",\"keywords\":[\"4G\",\"5G\",\"EE\",\"voip\",\"Wireless Internet\"],\"articleSection\":[\"ISP News\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\",\"name\":\"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/nggallery_import\\\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp\",\"datePublished\":\"2025-08-18T11:17:24+00:00\",\"dateModified\":\"2025-08-18T13:02:08+00:00\",\"description\":\"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE's national 4G and 5G platform, has confirmed that some of its\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/nggallery_import\\\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp\",\"contentUrl\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/nggallery_import\\\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp\",\"width\":1200,\"height\":1200,\"caption\":\"WiFi Calling and IP Calling by 123RF ID135161762\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2025\\\/08\\\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.ispreview.co.uk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#website\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/\",\"name\":\"ISPreview UK\",\"description\":\"Top Broadband ISP and Mobile Provider Information Site\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.ispreview.co.uk\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#organization\",\"name\":\"ISPreview.co.uk\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/ispreview_uk_logo.jpg\",\"contentUrl\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/ispreview_uk_logo.jpg\",\"width\":1000,\"height\":1000,\"caption\":\"ISPreview.co.uk\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/ispreview\",\"https:\\\/\\\/x.com\\\/ispreview\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/mjack\\\/\",\"https:\\\/\\\/bsky.app\\\/profile\\\/ispreview.bsky.social\",\"https:\\\/\\\/mastodon.social\\\/@ispreview\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#\\\/schema\\\/person\\\/de66a8b4e937c21c80e443d1bf9c35d5\",\"name\":\"Mark Jackson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/nggallery_import\\\/Mark-Jackson-96x96.jpg\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/nggallery_import\\\/Mark-Jackson-96x96.jpg\",\"contentUrl\":\"https:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/nggallery_import\\\/Mark-Jackson-96x96.jpg\",\"caption\":\"Mark Jackson\"},\"description\":\"By Mark Jackson Mark is a professional technology writer, IT consultant and computer engineer from Dorset (England), he also founded ISPreview in 1999 and enjoys analysing the latest telecoms and broadband developments. Find me on X (Twitter), Mastodon, Facebook, BlueSky, Threads.net and Linkedin.\",\"sameAs\":[\"http:\\\/\\\/www.ispreview.co.uk\",\"https:\\\/\\\/www.facebook.com\\\/ispreview\",\"https:\\\/\\\/x.com\\\/ispreview\"],\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/author\\\/markj\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK","description":"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE's national 4G and 5G platform, has confirmed that some of its","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html","og_locale":"en_GB","og_type":"article","og_title":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK","og_description":"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE's national 4G and 5G platform, has confirmed that some of its","og_url":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html","og_site_name":"ISPreview UK","article_publisher":"https:\/\/www.facebook.com\/ispreview","article_author":"https:\/\/www.facebook.com\/ispreview","article_published_time":"2025-08-18T11:17:24+00:00","article_modified_time":"2025-08-18T13:02:08+00:00","og_image":[{"width":1200,"height":1200,"url":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp","type":"image\/webp"}],"author":"Mark Jackson","twitter_card":"summary_large_image","twitter_creator":"@ispreview","twitter_site":"@ispreview","twitter_misc":{"Written by":"Mark Jackson","Estimated reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"NewsArticle","@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#article","isPartOf":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html"},"author":{"name":"Mark Jackson","@id":"https:\/\/www.ispreview.co.uk\/#\/schema\/person\/de66a8b4e937c21c80e443d1bf9c35d5"},"headline":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE","datePublished":"2025-08-18T11:17:24+00:00","dateModified":"2025-08-18T13:02:08+00:00","mainEntityOfPage":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html"},"wordCount":401,"commentCount":13,"publisher":{"@id":"https:\/\/www.ispreview.co.uk\/#organization"},"image":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage"},"thumbnailUrl":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp","keywords":["4G","5G","EE","voip","Wireless Internet"],"articleSection":["ISP News"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html","url":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html","name":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE - ISPreview UK","isPartOf":{"@id":"https:\/\/www.ispreview.co.uk\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage"},"image":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage"},"thumbnailUrl":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp","datePublished":"2025-08-18T11:17:24+00:00","dateModified":"2025-08-18T13:02:08+00:00","description":"Mobile operator Mozillion, which is a virtual network operator (mvno) that harnesses EE's national 4G and 5G platform, has confirmed that some of its","breadcrumb":{"@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#primaryimage","url":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp","contentUrl":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2025\/08\/nggallery_import\/WiFi-Calling-and-IP-Calling-by-123RF-ID135161762.webp","width":1200,"height":1200,"caption":"WiFi Calling and IP Calling by 123RF ID135161762"},{"@type":"BreadcrumbList","@id":"https:\/\/www.ispreview.co.uk\/index.php\/2025\/08\/customers-of-uk-mobile-provider-mozillion-suffer-wifi-calling-problems.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.ispreview.co.uk\/"},{"@type":"ListItem","position":2,"name":"Customers of UK Mobile Provider Mozillion Suffer WiFi Calling Problems UPDATE"}]},{"@type":"WebSite","@id":"https:\/\/www.ispreview.co.uk\/#website","url":"https:\/\/www.ispreview.co.uk\/","name":"ISPreview UK","description":"Top Broadband ISP and Mobile Provider Information Site","publisher":{"@id":"https:\/\/www.ispreview.co.uk\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.ispreview.co.uk\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.ispreview.co.uk\/#organization","name":"ISPreview.co.uk","url":"https:\/\/www.ispreview.co.uk\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.ispreview.co.uk\/#\/schema\/logo\/image\/","url":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2020\/07\/ispreview_uk_logo.jpg","contentUrl":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2020\/07\/ispreview_uk_logo.jpg","width":1000,"height":1000,"caption":"ISPreview.co.uk"},"image":{"@id":"https:\/\/www.ispreview.co.uk\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/ispreview","https:\/\/x.com\/ispreview","https:\/\/www.linkedin.com\/in\/mjack\/","https:\/\/bsky.app\/profile\/ispreview.bsky.social","https:\/\/mastodon.social\/@ispreview"]},{"@type":"Person","@id":"https:\/\/www.ispreview.co.uk\/#\/schema\/person\/de66a8b4e937c21c80e443d1bf9c35d5","name":"Mark Jackson","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2023\/01\/nggallery_import\/Mark-Jackson-96x96.jpg","url":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2023\/01\/nggallery_import\/Mark-Jackson-96x96.jpg","contentUrl":"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2023\/01\/nggallery_import\/Mark-Jackson-96x96.jpg","caption":"Mark Jackson"},"description":"By Mark Jackson Mark is a professional technology writer, IT consultant and computer engineer from Dorset (England), he also founded ISPreview in 1999 and enjoys analysing the latest telecoms and broadband developments. Find me on X (Twitter), Mastodon, Facebook, BlueSky, Threads.net and Linkedin.","sameAs":["http:\/\/www.ispreview.co.uk","https:\/\/www.facebook.com\/ispreview","https:\/\/x.com\/ispreview"],"url":"https:\/\/www.ispreview.co.uk\/index.php\/author\/markj"}]}},"_links":{"self":[{"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/42831","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=42831"}],"version-history":[{"count":0,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/42831\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/media\/42834"}],"wp:attachment":[{"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=42831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=42831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ispreview.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=42831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}