How to change?
If you don't know this, then you'd better to return it asap and stop talking here.
OK, flip from the top, then you will see a setting to change F to C.
I do not work for Rim, I don't even have blackberry phone, but I have a playbook for over one month, for 170$, I think it is best 7inch tablet in the market. You should get chinese input after OS 2.0, but if you can't live without chinese input and skype now, then you'd better to return it, just wait until Xmas to see if there is an android one with good price.