install termux (google play) (As termux didn't run jupyter-IRkernel, I had to install ubuntu).(tested in yoga book with Android 7.1 and Huawei phone with Android 8 - size with ggplot 1.66 Gb) I found two workarounds in a non-rooted device. Related links: rstudio in android - rooted, non-root rstudio discussion.
Rstudio-server didn't work in a non-rooted device, installed in ubuntu in termux.
