N900 -> then I put a twin SIM card in a Geeksphone Peak -> the N900 gsm module gets detached from the motherboard in 2013 and the Geeksphone(firefoxOS) became the main phone Then saved by Jolla in January 2014. I love my Jolla phone and Tablet, but still play around with other phones . My twin SIM card now lives in a bq Aquaris E4.5 Ubuntu Edition, and my bq Aquaris M10 Ubuntu Edition Tablet is already shipped and may arrive any moment .
I now and then turn on the N900 just for fun. It's no longer a phone but can still be used as a mail reader, music/podcast player, terminal and other interesting stuff..