GNOME Mobile Special Interest Groups (GMSIG)
"Mobile" is still (as of 2018) pretty uncharted territory in free software but becoming more and more interesting. GNOME and GNOME components are already amazingly well suited for mobile use cases but to become actually fully usable some more work has to be done. Also applications and many more components need to take special care for mobile use cases - from UI and UX design to resource and offline usage.
The goal of the GNOME Mobile Special Interest Group (GMSIG) is to network all people interested in GNOME for mobile devices. GMSIG shall be a common forum to exchange information, get advice and share developments and resources with everyone interested in creating a GNOME mobile user experience.
mailinglist, still to be done, watch the mailinglists list at https://mail.gnome.org/mailman/listinfo/
IRC: #mobile at irc.gnome.org; if you use matrix, click here: https://matrix.to/#/!msoGSHEKUuKIvQTsTG:matrix.org