I would like to access/use the platform at smartpi.cn to be able to create new firmware for voice recognition module based on SU-O3T but
the system require a chinese (I guess ???) phone number.
I'm from Europe, so such phone number ...
may be you can try "Temporary phone number" , "Receive SMS online". Find a temporary online chinese phone number to receive SMS. you can find it in search engine
If you need an account, you can ask a friend in China to help you register one. If you don’t mind, I can help you register it. If you have any questions, please email me: 13777720957@139.com; or contact via WeChat: 17602035766