Hello,
I have gone through your requirements, you want to make your compatible with google latest SMS/CALL permission policy.
Let me first clear that I already did it for my previous two clients, so I am fully aware of it.
I have to discuss with you about what is your use, if you are reading OTP from sms then need to implement alternative 'SMS Retriever API'
I am ready to discuss, waiting for your reply.
Let me tell you about myself, I have worked on more than 50 android applications in five years of my professional career.
I have expertise in android development, full knowledge of Android life cycle - Material design - REST api - Sqlite database - Payment integration - Third party library integration - Background services - Firebase.
One more thing I am full time freelancer so will always available for support and communication.
Let me know if you are interested, I am ready to discuss everything before you award me this task.
Thanks,
Hardip