arm doesnt necessarily make it a phone, gsm radio more likely. but now there are laptops with gsm radios so....the lines are blurred bigtime. if placing and receiving gsm based audio calls is your primary use for a mobile device, no, the n900 is not the device for you.
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...