New answers tagged call-screening
I just changed my whole software in REDMI Authorised service center. I guess the update corrupted my Operating system.
If your phone is rooted, you can use Tasker to do this. Set up a profile that runs on missed call and triggers a task that runs the shell commands listed here: (http://tasker.wikidot.com/whatsapp-send-message). Just ignore the AutoVoice commands used to get input and hard-code the message you want sent.
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