OpenVPN for Android (free, open source software): available here on the Google Play Store or here on the independent app store F-Droid. OpenVPN Connect (free, created by authors of OpenVPN protocol): available here on the Google Play Store; Download configuration files to your device:
In the OpenVPN for Android app, press the import button in the top right corner, find your recent downloaded file and select to import. Press the save button to finish importing the config file. To add more connections simply repeat step 3b and 3c with different configuration files. OpenVPN connection challenge - Apps - F-Droid Forum May 08, 2019 What is F-Droid and how to install it on Android Dec 19, 2018 OpenVPN for Android - Apps on Google Play Mar 05, 2020
Protonmail seems to really be pushing for f-droid and also mentions protonmail and other apps being on f-droid in the future. So this is a very good outlook for the open source commitment of Protonmail on android as the process on f-droid is really rigid (as can be read in said thread).
Android: AFWall+ brings Tor support · InfoSec Handbook Nov 10, 2018
The ed25519 and ed448 configs aren't supported by OpenVPN for Android yet. As of version 0.7.6 of OpenVPN for Android, OpenSSL 1.1.1a is included, which means Ed25519 and Ed448 is now supported. Whenever you download the configs from your browser, you should be able to open it and it'll be automatically imported into OpenVPN for Android.
OpenVPN for Android. OpenVPN without root. Version: 0.7.8 Added: 05-11-2013 Updated: 30-05-2019. more_vert. Site F-droid; Source (GPL-2.0-only) Tracker OpenVPN for Android (free, open source software): available here on the Google Play Store or here on the independent app store F-Droid. OpenVPN Connect (free, created by authors of OpenVPN protocol): available here on the Google Play Store; Download configuration files to your device: Dear fellow F-Droid user, Trying my VPN on OpenVPN doesn’t work, resulting in MGMT: got unrecognized command> FATAL ERROR: cannot open TUN: Permission denied (errno=13). before that in the log list: GDG: SIOCGIFHWADDR(Io) failed but before that: peer connection initiated. OpenVPN on Replicant Samsung S2 Thank you.