BSNL offers free data to its customers for 4G SIM upgrade
Bharat Sanchar Nigam Limited or BSNL is currently offering extra data benefits to its customers. A BSNL user can avail of the offer if they upgrade their old BSNL 2G/3G SIM to BSNL 4G. Initially reported by telecom talk, BSNL Andhra Pradesh…
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