source https://bsnlteleservices.com/bsnl-balance-check-ussd-codes/
BSNL Balance Check Code for Voice, 4G Data & SMS
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June 25, 2020
June 25, 2020
Dial short code for BSNL balance check on 4G SIM card to get present balance with validity and expiry date related to free call, 4G data and free SMS, Know the different USSD codes available now and...
source https://bsnlteleservices.com/bsnl-balance-check-ussd-codes/
source https://bsnlteleservices.com/bsnl-balance-check-ussd-codes/
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