Wondering how to deactivate caller tune on Airtel in Nigeria? The network provider allows Nigerian customers to deactivate the service by SMS by sending the message 'STOP' to 791 or 'DEREG' to 790 via SMS. Alternatively, you can manage or deactivate your caller tune by speaking to a customer care representative on 111 or 121. The easiest way to deactivate caller tune on Airtel in Nigeria is to send the word 'STOP' to 791 via SMS. Photo: @airtelng on Facebook (modified by author) Source: Facebook Key takeaways Deactivation for Airtel's caller ringback tunes is processed immediately once subscribers send the word 'STOP' to 791 or 'DEREG' to 790 via SMS. once subscribers send the word 'STOP' to 791 or 'DEREG' to 790 via SMS. To activate Airtel caller tunes, dial *790# and follow prompts ...