I kinda doubt it, but you can double check on line by going to the Siemens website and checking out the info on your model. Did you have a contract back home? We got stung when we moved from Lithuania to Germany because the phone co. put a lock on our phone so we could only use their sim cards for two years or something. We finally got that sorted out (we think) but can't find the battery charger to check!
I would think that the local experts would be able to fix it if it were at all possible, those guys are brainiacs, so unless the Siemens website gives you new hope, I'm guessing you'll have to buy a new model. If you're going to be in Asia for a while, it's probably worth the investment, anyhow.