Mobile chatting website & logo design

I have a chatting website which is mainly used on mobile phones. There are 3 webpages required to be designed: 1. The landing page where explains what people can do on this site including the loading image. 2. The chatting page where people can read messages and can send text messages and images 3. The chat list page where people can see all the people currently talking to I also need a logo for the website. Need button icons for chatting, profile, link, qr scan buttons as showing in the attachment. The principle for the design are: 1. Tidy 2. Easy for user to understand 3. Mobile phone user friendly 3.1 Fit different size of mobile screens 3.2 Fit different mobile phone orientations 4. The design style for each page, logo and icon is consistent 5. The logo is able to be used as mobile app icon on iOS and Android platforms 6. The deliverables are not used by other projects The deliverables are: 1. The layout of the design that fits on different screen. 2. The assets of each images for different sizes and orientations (from original full size to icon size) 3. The project source files such as .psd, .css, .js, etc. The timeframe is within 5 calendar days.