I am getting so irritated by this message. If you're trying to make a string of calls, they get interrupted 10 seconds in and you have to dismiss the message before you can continue.
I'm on a Treo, and I've been searching and posting on every board I can find for a way to stop it. On the Treo, it comes in as a "Network Response" popup, not a text message. So if you make a call, and move on to something else, the message pops up, you dismiss, and it sends you back to the dialer or launcher screen. So annoying.
Here's what I've discovered: The message is in response to a SIM initiated request for the account balance, it basically sends out the *646# or *777# request automatically after any network activity, including GPRS and SMS. So the trick to blocking would be to block those numbers from being dialed or sent. Accidentally, I discovered that the messages do not appear if I have DUN configured and enabled, after I have made a connection to my tethered laptop and disconnected again. The messages are disabled until my phone soft resets or I disable DUN.
any SIM hackers out there?