Considering the security problem, this plugin adopts the method of a server generating verification codes.
That is, the Server in the PhoneAuthcode.zip file
It runs on Windows and Linux systems
The server program will check the modules required by the server and conduct automatic inspection and installation
The user does not need to know the inner workings to boot with one click
Only three steps are needed to send the mobile phone verification code from the client:
Use SMS messages to verify user's identity
Number of Blueprints: 1
Number of C++ Classes: 1
Network Replicated: No
Supported Development Platforms: "Win64","Mac","IOS","Android"
Supported Target Build Platforms: "Win64","Mac","IOS","Android"
English document : https://zgchihiro.github.io/post/ue4-send-sms-verification-code/