Wow... very impressive tube, u all haf there.
I'm also interested in joining u tubians...

But before i buy.. any word of advice?
1) Any serious defect / complains..on the phone's functionality?
- I visited NCC 4 times for my phone problems, maybe I'm the only person with bad luck here, but so far NCC managed to fix em all.
2) Is the tube's GPS function easy to use and whether the GPS function is usable in other countries?
- You can download maps using the Nokia Map Loader and it has maps for almost all countries in the world. I have used it up until Sabah and Perak, and a lot of the map is not updated / outdated.. it shows I'm driving in the middle of the sea in Sabah!! Google Maps, which is a freeware you can install in the Tube, gives more accurate positioning I believe. Garmin works on Tube as well, please check the First Page.
3) Is the tube using solely integrated GPS or A-GPS? i check the specs does not mention A-GPS. Does that mean the GPS is not so powerful when using in covered city area?
- It has both.. if "covered city area" means in Buildings and Parking lots, the signal is weak but that should be same with all GPS devices.. if outside, works fine in KL, PJ almost anywhere I go.
4) Does it haf dual sim slot?
- Negative
How compatible OVI suite with MsOffice program..any pro & cons?
Is the OVI suite editable.. or read only?
Er.. OVI is not for opening/editing Office programs/documents..
It's just a rebranded version of Nokia PC Suite.