I can't. If the phone itself has built-in QQ, you can only use QQ. As for downloading software, at present, Nokia's software can only run under the race platform of S60. You are a high imitation, exactly the same. But the system is different. High copy machine uses KTM platform. So you can't download the function of the software extension itself. This is the biggest reason why high imitation N series mobile phones have been cheap.