Bharat Sanchar Nigam Limited has launched a new BSNL plan 551. The telecom operator is continuously launching new offers and plans for its users and this time its a new prepaid plan. The new BSNL plan 551 is launched for all prepaid users in Kerala. This is not a calling plan of BSNL. This is … Continue reading BSNL Prepaid Plan 551 Launched With 135 GB Data | Check Plan Details