Android Wallpaper App Development

I'm looking to develop a wallpaper app for Android. The app should include the following features:

- Login/Sign-up Page: Authentication via email/password and phone number verification.
- Upload/Download Pages: Users can upload and download wallpapers.
- Profile Page: Users can view uploaded wallpapers, change personal information, and view download history.
- Payment Initiation Page: For processing payments related to the app functionalities.

The app should be user-friendly and visually appealing.

Ideal Skills and Experience:
- Expertise in Android app development.
- Experience with user authentication and payment integration.
- Strong UI/UX design skills.
- Familiarity with backend development to support the app's functionalities.