Airtel
SMS service

My Airtel phone no is 919995567156

I could not send any SMS to any phone number or even to customer care.

There is no problem in phone or its settings, because if I change the sim card, it is workig.

The error message is coming as

Message sending Failed Try again later.

The above problem is existing for about 4 months.

Kindly try to rectify this.

Thank you,

regards,

Dasan