FossifyOrg/Phone — reverse-engineered prompt

Build me a simple privacy focused Android dialer app in Kotlin, like an open source replacement for the default Phone app.

I want people to be able to make and receive calls, search their phonebook, see recent calls, manage contacts, block unwanted numbers, and choose which SIM to use if the phone has more than one. The app should feel clean, fast, and lightweight, with no ads, no tracking, and only the permissions it really needs.

Please include basic customization like light and dark themes and a simple settings screen. Make the interface friendly for everyday use, with large clear call buttons, contact names, phone numbers, and a straightforward dial pad. It should respect privacy and keep everything local on the device.

Set up the Android project so it can be built and run in Android Studio. Look up current Android calling and permission docs online if you need to.