Linphone App Rebranding

I'm looking for a talented designer to help rebrand the Linphone mobile app. This will involve:

- Redesigning the logo and app icon
- Updating the color scheme
- Revamping the UI design

Ideal skills and experience for this job include:
- Extensive experience in mobile app UI/UX design
- Strong graphic design skills

- Rebrand Linphone (version > 6) under our name on Android & iOS.
The Linphone rebranding should includes:
• Replacement of the title, logo, main colors, and icons (graphic resources will be provided)
• Customisation of the user login interface (use only QR code scanning.)
• Predefined settings to work with our SIP network
• Assistance for submitting the application to the Apple App Store and Google Play Store

- Support
• Support the mobile App during 1 month for potential bug fixes
• Include one free SDK update per year (Android & iOS) (additional payment every year)