Please Call Me Service lets you talk to your friends even when you have no more credit or your line has been partially suspended. All you need to do is send a free, blank message to the number you wish to call you back. Both prepaid and postpaid subscribers can use this service, yet since Please Call Me is only provided by MTN Irancell inside Iran, using it to ask the subscribers of other operators to call you back is not possible for now.
Use “Please Call Me” service by dialing this USSD:
*150*your recipients’ number#
In this case, the following text will be sent to your intended recipient:
“Please call me… (Your MTN Irancell number as the requester)”