I’m using BSNL sim card for last 4 to 5 months so I would like to share my experience with BSNL.
There are so many people with it’s network service. But the mainly I suffered from internet connection.
First of all they are not giving such offers like unlimited data and calling which is provided by other companies.
Sometimes internet connection is too law to send for only a one message in WhatsApp or messenger.
And it’s network problem is mainly faced in rural area you have to go in open place for making call which is worst.
Nowadays, internet connection and free calling are mainly provide and well serviced by other companies which is not so well provide in BSNL.