https://www.youtube.com/watch?v=SUI5sA99...

Huawei Honor 9 is not difficult to tear down. This video helps you repair Huawei Honor 9 by yourself. You can follow the video to open up the battery cover and replace the inner devices of Huawei Honor 9.

There is also a superb step by step webpage:

https://www.myfixguide.com/huawei-honor-...