My tracking number still is unknown...

man some time EMS track update 24hrs some time its take time so dont be worry its will update and you will get your Device

I'm not in panic BUT you claimed my order was shipped on 21.
thats 5 days
how much time it takes?
I know EMS is not the best but thats very bad!

Yes EMS is not good more but it will take 7 to 12 days in your country

from date of shipping?
or from the date EMS lists its tracking information?

date of shipping: 21/01/2015