How can I display multiple shapefiles on an iOS device? My client is asking to display all the states in a different color, and again cities in a different color and all the fields in a different color with lat/longs. I was not able to proceed further with such a huge requirement so how should I start? What are the requirements for moving forward? Are there any GiS specialists needed for me to know completely about the shapefiles? Please give me a suggestion which would be very helpful.