BSNL Chennai Telephones has already started offering 4G services in Thiruvallur district, covering 19 villages. Now, gearing up to launch 4G services in Chennai shortly.

All 2G/3G customers with old SIMs are requested to upgrade to 4G SIM cards free of cost by visiting their nearest BSNL Customer Service Center (CSC), retailer, franchisee, or Direct Selling Agent (DSA).

Existing 4G SIM customers can experience  4G services without replacing their SIM cards.

 

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