Facebook is very good app which give us freedom of our thought to express with friends. one day me and mine friend decided to reach a village for survey purpose. we also discuss that your side is north mine south. we went on our route . after sometime we miss each other and the network problem also a big issue on rural area so I find a lot but no result peoples of village are giving advice you go there and somewhere but not find each other suddenly network comes and in mind come I call him but his phone out of reach . so my thump stop on facebook app. why not drop a message on his profile id. after some time I received message where are you buddy. I call him but same results . so message him. tell your location . after some time he tell his location I reach there find my friend almost 5 miles . so in this way facebook app help us. thank you