> This is going to be problematic, as there are still devices currently for sale on Android 5/6 If I recall correctly, Android >=5 has pretty decent support fo

> This is going to be problematic, as there are still devices currently for sale on Android 5/6 If I recall correctly, Android >=5 has pretty decent support for modern crypto (such as TLS V1.2, ECC). So, Android 5/6 could still just work, if the vendor is bothered to update the CA root store.