Bsnl is one of the most useless network I ever used. I am living in kerala my old sim was bsnl 9895319916 and I port out this number to idea because of the network problem, When I tried to call my friends then the network says the network is busy now call back after some time and the call drop are huge in bsnl. some times my friends call me then the bsnl says that my number is switched off or out of service, so that it affected my business and I port out to idea. when I tried to customer complaint number 198 but no one attend the call I hold 20-30 mints then I stop calling customer care. Bsnl provieds the call charge and net charge in low rate but the service is very bad. dont port out to bsnl