The App should open and display two buttons called "Status" and "settings".
When "settings" button is tapped a window with label "Enter mobile number" should open which allows entry of an international format cell phone number and a button to close this window.
When the "Status" button is tapped the App should send an SMS to that phone number containing the keyword "Status". The App should wait 60 seconds for a reply. The reply comes from a remote device that reads this SMS then automatically replies.
When the reply arrives the first two lines of the SMS will contain LAT and LNG information. The App should open Google Earth and display where that location is with an icon. If no reply in 60 seconds the App closes. (See attached file for format).
The App should not disturb the cell phones normal SMS App and be built in a way that many more commands can be added.
After this App is working the next other information in the reply SMS (such as BAT PIR ENT etc) needs to be handled. That will be a new projects.
The source code of the App must be supplied and compiling environment specified so I can do small edits and maintenance and build the App myself to save time.
Done, here is a demo video for your requested app based on your requirements, the source code is available now tested & working, cost negotiable. [login to view URL]