MOBILE SIM SIGNALS ; MANAGEMENT PROBLEM

As a person , I live at two locations . One is in a home in Old Gurgaon and other is an appartment in Sector 47 , Gurgaon . In my smartphone , there are two sim cards ; one is Reliance Postpaid connection ; which is my primary number and other is a Airtel sim card , which is a prepaid card and is my secondary connection . In my home in Old Gurgaon , especially in my room on ground floor , sometimes I donot get good signals of reliance postpaid ; so at that time , I switch to airtel prepaid for getting signals . Its a management concern , that in my old gurgaon home , especially on ground floor , I donot get good signals of reliance postpaid connection. But if I go outside on road or if I go to the first floor of my old gurgaon home , I get good signals of reliance . And in sector 47 , Gurgaon ; I have no problems in reliance signals . Why I am writing all this , is because , somebody may understand that if I switch to Airtel prepaid for signals in old gurgaon home , especially on ground floor ; its because I donot get signals of relaince postpaid there . To conclude , nothing is Intentional in my life ; its a problem related to socio economic concerns of locations .