{"id":46509,"date":"2026-05-20T07:05:58","date_gmt":"2026-05-20T06:05:58","guid":{"rendered":"https:\/\/www.ispreview.co.uk\/?p=46509"},"modified":"2026-05-20T08:53:26","modified_gmt":"2026-05-20T07:53:26","slug":"gauging-support-for-cross-platform-e2ee-rcs-messaging-on-uk-mobile-operators","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2026\/05\/gauging-support-for-cross-platform-e2ee-rcs-messaging-on-uk-mobile-operators.html","title":{"rendered":"Gauging Support for Cross-Platform E2EE RCS Messaging on UK Mobile Operators UPDATE"},"content":{"rendered":"<p>Google and Apple recently began bringing cross-platform end-to-end encryption to Rich Communication Services (RCS), which is a data-only messaging service that&#8217;s intended to replace traditional SMS text messaging (you need a mobile internet \/ broadband connection for it to work). But it&#8217;s not yet fully available from all UK mobile operators.<!--more--><\/p>\n<p>The move to make the service more secure and private began over a week ago after cross-platform E2EE RCS started rolling out in beta for <strong>iPhone<\/strong> users running <strong>iOS 26.5+<\/strong> with supported carriers, while<strong> Android<\/strong> users on the latest version of <strong><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.google.android.apps.messaging&amp;hl=en_GB\" target=\"_blank\" rel=\"noopener\">Google Messages<\/a><\/strong> can already access the same feature. Encryption is designed to be on by default and will be automatically enabled over time for new and existing RCS conversations.<\/p>\n<div class=\"bq2\"><strong>NOTE:<\/strong> Apple maintains a useful list of supported mobile features, filtered by different carriers (<a href=\"https:\/\/support.apple.com\/en-us\/108048\" target=\"_blank\" rel=\"noopener\">here<\/a>).<\/div>\n<p>As it stands, of the primary UK mobile operators, both <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/eebroadband\" rel=\"nofollow\" target=\"_blank\">EE<\/a> (inc. <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/britishtelecom\" rel=\"nofollow\" target=\"_blank\">BT<\/a> Mobile) and <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/threeuk\" rel=\"nofollow\" target=\"_blank\">Three UK<\/a> have already introduced beta support for the cross-platform feature on both iOS and Android devices (support among their respective virtual operators is currently unclear or non-existent). On the flip side, a spokesperson for <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/o2uk\" rel=\"nofollow\" target=\"_blank\">O2<\/a> informed ISPreview that the feature was &#8220;<em>something we\u2019re keen to support in [the] future<\/em>&#8220;, but sadly they couldn&#8217;t provide a clear timescale.<\/p>\n<p>The situation around <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/vodafoneuk\" rel=\"nofollow\" target=\"_blank\">Vodafone<\/a> is a little bit more complex, due to the merger with <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/threeuk\" rel=\"nofollow\" target=\"_blank\">Three UK<\/a> (VodafoneThree). As above, Three already supports the cross-platform upgrade, but <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/vodafoneuk\" rel=\"nofollow\" target=\"_blank\">Vodafone<\/a> itself does not (i.e. E2EE RCS only works Android to Android) &#8211; partly due to operating their own RCS infrastructure (instead of using Google&#8217;s platform). We did query this with <a href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/vodafoneuk\" rel=\"nofollow\" target=\"_blank\">Vodafone<\/a> yesterday, but have yet to receive a reply and will update this article when or if that changes.<\/p>\n<p>Suffice to say that some mobile operators still have a bit of work left to do on cross-platform E2EE RCS integration. Meanwhile, the UK government continues to view the additional privacy features introduced by E2EE messaging services as being a fundamental threat to public safety (<a href=\"https:\/\/www.gov.uk\/government\/publications\/end-to-end-encryption-and-child-safety\/end-to-end-encryption-and-child-safety\" target=\"_blank\" rel=\"noopener\">here<\/a>), while continuing to demand backdoors for security services with proper legal authority. But as recent compromises of global telecoms networks show (e.g. Salt Typhoon), legally mandated backdoors can end up being exploited by hackers.<\/p>\n<p><strong>UPDATE 8:51am<\/strong><\/p>\n<p>Vodafone have informed that they&#8217;re not yet in a position to comment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Google and Apple recently began bringing cross-platform end-to-end encryption to Rich Communication Services (RCS), which is a data-only messaging service that&#8217;s intended to replace traditional SMS text messaging (you need a mobile internet \/ broadband connection for it to work). But it&#8217;s not yet fully available from all UK mobile operators.<\/p>\n","protected":false},"author":1,"featured_media":40723,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[405,109,32,479,96,2721],"class_list":["post-46509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uk_isp_news","tag-ee","tag-internet-privacy","tag-o2","tag-security","tag-vodafone","tag-vodafonethree"],"share_on_mastodon":{"url":"https:\/\/mastodon.social\/@ispreview\/116605403758836743","error":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gauging Support for Cross-Platform E2EE RCS Messaging on UK Mobile Operators UPDATE - ISPreview UK<\/title>\n<meta name=\"description\" content=\"Google and Apple recently began bringing cross-platform end-to-end encryption to Rich Communication Services (RCS), which is a data-only messaging service\" \/>\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\/2026\/05\/gauging-support-for-cross-platform-e2ee-rcs-messaging-on-uk-mobile-operators.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gauging Support for Cross-Platform E2EE RCS Messaging on UK Mobile Operators UPDATE - 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