Android 4+ PhoneGap to be developed and developed

The existing mobile application should be improved:
(1) Object identifiers should be line-based rather than digital.
(2) Make the search phrase input line over the full width of the screen.
3) The "Search" button and the new "Clear" button under all filter/search bar parameters.
(4) Tap on the button "Clear" - remove all values entered in the filter.
(5) In the upper right corner of each screen, make the X button - "Close the application"
(6) Reduce the time of the primary screensaver to 0.5 seconds.
(7) Replace the screensaver picture.
(8) Replace the icon for one of the main menu buttons.
(9) Reduce the height of the main menu buttons by 1.5 times
10) Add at the entrance above the field "Your city" "choice from the list "Country" and filter the cities by selected country.
(11) Add a filter by the "type of organization"
I will provide the source and detailed TK after the initial evaluation of these requirements and signing of the NDA.
In the future, new functionality will need to be developed.
50% prepayment is possible after several successful projects.
We are interested in long-term cooperation.