Hi, Nice to meet you.
I have just read the detail carefully. It's no problem for me.
I'm a native mobile app (android & iOS) expert with rich experience.
So I can complete your app perfectly on time.
Hi, wishing you good fortune in your endeavour.
I already have source code.(AOSP)
if you need any more feature, let me know.
This will take max 1 day if you need vanila dialer.
And 2-3 days if you need any more feaMore