Kainaw writes "This was asked in 2005 and 2008. I think it should be revisited yet again... With iPhone, Android, and Windows smartphones running around, which (if any) of them are well-suited to Unix/Linux server administration on the run? SSH is a must. A good screen resolution. A physical keyboard won't block the screen with a virtual keyboard. Many physical keyboards omit the numeric keys now, making the typing of numbers rather difficult. Nearly every smartphone has WiFi capability now. Some will do an X display through SSH tunnelling. So, pushing through all the bells and whistles that have nothing to do with effective server administration, what is left?"