Since we need to implement our own OAuth resource server, but we do not know the authorization method of the mobile terminal, we hope we can describe the authorization process of the mobile terminal again. It is not clear after reading the documents of Sina, Taobao and QQ’s open platforms and RFC 6749.
OAuth is a protocol that does not distinguish between devices. I don’t know if you are looking at the SDK developed by his mobile terminal. The SDK will encapsulate the calling API for you, so you can’t see the hidden details inside.