Is encfs available in an Android phone?
You may try Encdroid a piece of free software released under the GNU General Public License.
It is an Android application. It can access EncFS volumes on cloud storage or internal/USB storage devices.
Google Play Store Link: https://play.google.com/store/apps/details?id=org.mrpdaemon.android.encdroid&hl=en
Source code: https://github.com/mrpdaemon/encdroid