https://bbs.archlinux.org – I know this post is solved and getting pretty old but I felt like I should add a few excellent suggestions to the list. Splashtop 2 and Teamviewer are both nice programs for controlling ones Arch, or other LINUX desktop, with an Android, they both have apps for the iPhone too.. Splashtop is made for Ubuntu, however it is in the AUR and they also give you the source of course. (HowTos)