How can I configure the Avast antitheft app on my phone that I will able to receive any SIM card number inserted on my phone, if it is stolen and the thief insert a new SIM card ?
Hi,
It is not possible (if I understood your question correctly).
Please see these articles on what is possible with Avast Anti-Theft.
https://support.avast.com/en-ww/article/Android-Anti-Theft-FAQ/
https://support.avast.com/en-ww/article/116/