"Standing on Our Own Two Feet" - Let's Encrypt CA + older Android versions

Hi @certrob! Welcome to the forum. We actually had a very similar request over the weekend on Mobile client workarounds for ISRG issue, and discussed some good solutions. I agree we should provide a bit more guidance. I plan to update the blog with "If you are an app developer" section outlining the general approach to work around the issue. A detailed guide is a little beyond what we can offer in a blog post, but if someone writes up detailed guides for various HTTP libraries and frameworks, I'd be happy to link to them.

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