Let's Encrypt warns phones running Android 7.1 or older won't connect to many secure websites starting in 2021 as they will no longer trust its root certificate
but there's a fix Rob Thubron / TechSpot : A third of Android devices will lose support for many secure websites next year Alan Martin / Tom's Guide : Your Android phone could have a big problem soon — what to do Martin Brinkmann / gHacks Technology News : Android 7.1.1 or earlier devices will face connection issues next year Charanjeet Singh / Fossbytes : Many Websites Will Break On Older Android Smartphones In 2021 Matt Binder / Mashable : Your old Android device will no longer support many websites in 2021 Davey Winder / Forbes : Let's Encrypt Android Alert—220 Million Websites Could Break In 2021 Alyse Stanley / Gizmodo : Older Android Phones Will Be Cut Off From a Large Chunk of the Web in 2021 Tweets: @restartproject : The Android ecosystem is a security disaster. This data from September 2020 shows that only a little over half of Android devices are on Android 8.1 (Oreo) or newer. Android 8.1 was released almost THREE YEARS AGO. https://letsencrypt.org/... https://twitter.com/... Glenn Gabe / @glenngabe : To clarify, this will not go into effect until 9/1/2021, so hopefully the numbers will be lower. But there will be devices that run into problems. Let's Encrypt recommends installing Firefox for Android for users that are impacted... https://twitter.com/... June Castillote / @junecastillote : If you use Let's Encrypt SSL certificates for your org, this article is a must read. They are changing their Root Cert, as well as the ACME client API. https://letsencrypt.org/... Glenn Gabe / @glenngabe : Ugh: Some websites will stop working on older Android versions on Sep 1, 2021 Currently, 33.8% of Android devices are running v7.0 or lower. After 9/1/21 those devices would receive certificate errors when users visit sites w/a Let's Encrypt certificate: https://letsencrypt.org/... https://twitter.com/... Scott Helme / @scott_helme : On Jan 11 2021, @letsencrypt will switch to the R3 Intermediate and certificates will chain the X1 Root. https://letsencrypt.org/... Jason / @safaiyeh : Below Android 7.1.1 will no longer accept Let's Encrypt certs... https://letsencrypt.org/... @hanno : May I ask a question? Google created this mess by not having a working update process for Android. Google owns (afair old, widely installed) CA roots. Couldn't Google cross-sign a new LE intermediate? https://letsencrypt.org/... Peter Van Garderen / @pjvangarderen : Thanks @letsencrypt for providing the world with free and easy encryption. Upgrade your Android or install Firefox on it if you want to stay compatible with Let's Encrypt protected websites after Sept 2021. https://twitter.com/...