How do you send money to another bmobile by using the 121?

To send money to another bmobile user using the 121 service, you need to dial *121# on your mobile device and follow the prompts. Select the option for money transfer, enter the recipient's mobile number, and specify the amount you wish to send. Confirm the transaction, and you will receive a notification once the transfer is successful. Ensure you have sufficient balance in your account to complete the transaction.