> CPython's support for Android targets only stable releases of the official NDK.

As the NDK is seeing many changes in the recent past and near future (deprecation of the support of gcc in favor of clang, Unified Headers, nearly all the NDK scripts written in python, ...) we should use the latest stable NDK release.

> That includes all building time and runtime results.

You can open new issues for NDK r14 with the description of the problem and with NDK r14 building time and runtime results, as a reminder of what will need to be done when we switch to r14 as it was done for issue 29040. But please no PR. Maybe add a comment saying that for the moment this is just a reminder.