Flutter Phone Dialer App Clone

I need a skilled Flutter developer to clone an existing phone call dialer app. The cloned app should include the following features:

Essential Features:
- Speed Dial

Additional Features:
- Call Blocking
- Customizable UI Themes
- Caller ID Display

Ideal Skills and Experience:
- Proficiency in Flutter
- Experience with call handling and dialer app development
- Strong UI/UX design skills for customizable themes
- Familiarity with call blocking and caller ID functionalities

I'm looking for a developer who can deliver a high-quality, functional, and visually appealing app. Please provide examples of similar work done.