Open the BSNL self-care portal or a trusted bill payment app
Log in with your BSNL account or mobile number
Select the bill payment option
Choose the BSNL service type such as mobile, landline, broadband, or fiber
Enter your BSNL number or account number
Check the bill amount displayed
Select a payment method such as UPI, debit card, credit card, net banking, or wallet
Complete the payment
Save or download the payment receipt
Check your BSNL account or SMS for payment confirmation