Anyone whose website primarily attracts mobile users could see a drop in visitor numbers from January. The reason is that older Android smartphones will no longer be compatible with certain certificates from the provider "Let's Encrypt". Smartphones with Android 7.1.1 or older are said to be affected. Certificates from "Let's Encrypt" are now common and widespread.
They are also often cheaper than the equivalents from other certification authorities, but their quality is just as good overall. Until Android 7.1.1 was released, these certificates were not yet so widespread, which is why newer versions of the operating system can only handle them correctly. Users of these smartphones can partly resolve the problem themselves by switching to a different web browser. According to media reports, Mozilla Firefox can provide a remedy so that at least some of the websites that can no longer be accessed are available again.
Look at your website statistics. If a large proportion rcs data poland of your visitors are still using Android 7.1.1 or older, you could install a certificate from another provider. But this is also new and there is no guarantee that the older Android version can handle it. In most cases, this will also incur additional costs. It is likely that many users will replace their no longer supported devices in the medium term. Therefore, the best solution is probably to simply wait out the problem.
There is likely to be a wave of fresh electronic waste from January. The "cheap! Cheap!" attitude when buying a smartphone will eventually take its toll. Anyone who buys one should spend a few hundred euros more and make sure that the device is supplied with updates for several years. This will not only close critical security gaps over the years, but also solve problems like this.
Users of other mobile operating systems such as Apple's iOS - or Microsoft's now unfortunately discontinued Windows Mobile - still receive or received free updates many years after purchasing their device. In a world where there is constant talk of "digitalization", "mobile-first" and environmental protection, this should really be a matter of course.