My Nokia N900 from 2009 still does all I want. Phone, xmpp, camera, video, calendar with CalDAV, web, email, sms, rss, ssh, emacs. Just ordered a new battery fo

My Nokia N900 from 2009 still does all I want. Phone, xmpp, camera, video, calendar with CalDAV, web, email, sms, rss, ssh, emacs. Just ordered a new battery for 10 € instead of a new phone, because I had no idea why I should get a new device.