The service. Charge free roaming may be. All over BSNL is nice network. BSNL the largest network which powered or included 2g, 3g, 4g, also broadband, and landline. BSNL is an India& apos; s government company. It is a cheapest network never seen befor. Many emploies are appointed in Customer service or customer care to help customer, good response from About network coverage is good but somewhere may disappoint. This is a idea network is bast an all india .bsnl networ is bad and high network is idai.