hi,
I bought N900 and I want to check if its new and original device

how can I see the time that the phone is worked for?

what can I understand from the IMEI code?

the device is made in korea as its written on the picture under the battery.
does all the item like headphones etc. made in korea also?

does nokia has any list of IMEI codes of original devices?

and anything else to check if its new and original device

pls give me any info how to check it
its very important.
tnx!