Older Android phones will no longer be able to see enough secure websites as of September 2021.
You may need to upgrade your Android phone and not upgrade to buy a new one if you want to visit secure pages that use https. According to Android Police, the Let's Encrypt certification company he warned that phones running Android versions before Nougat 7.1.1 will not trust root certificates starting in 2021.
The result will be that they cannot view enough secure websites. The organization will cease on January 11, 2021 default cross-sign for the certificate that enables this functionality and will withdraw its partnership on September 1 of that year.
A workaround is available to install Firefox (Mozilla is a Let's Encrypt partner) using its own certificate store, but this won't help other browsers or functionality beyond programs tours.
It is a habit for developers to drop support for older operating systems. Let's Encrypt noted that about 33,8 percent of Android users on Google Play has a version older than 7.1 and some hardware vendors cut their support relatively early.
This means that you may have bought a low cost phone in 2016 or even 2017 that could miss out on access on some sites, and without any solution.
