JSON and SQLite

I store my information(my app inform...) with help JSON. All is ok, but is one nuance. When i clear the RAM, all information is removed. I know that it is clearing temporal information. Tell me way how can to get around this. I looked to the side Clouds and BACKEND but i need well information, to begin to understand this technology. If you can give some URL with good instructions, publications or some books about Clouds or BACKEND. And another how to be when device hasn't internet connection?