AIS allows you to check your 1-2-Call phone balance by calling *121#. This returns a message on the phone screen with the credit balance and duration of time remaining in your account. Is there another number that you can call to get the same information audibly?

The audio version is on the SIM, so should appear within the phone book as Balance Check or similar.

Regards

Balance Check *121

Great. Thanks.

Most *nnn# text commands also work dialing 900nnn, so 900121 allows you to hear your balance and expiration date, which is the same is if you dial 900120 to top up.