It cannot be a carrier issue, as I also have the same system version and radio and I am on Vodafone network. I have not experienced any of this problem so far.. like you said, it could be because of the Mobile Service Center Number!!!
Okay, Danke for the feedback! Did you try the SMSC seting as pointed above?
2. In the menu that appears, choose phone information
3. Navigate to SMSC and tap >update< (at your right)
The blank space shoulde be populated with Mobile Service Center number.
If you get an [update error] message that means your radio and sim chip are not compatible (happens mostly with older sim cards, cutted ones) if so, you have 2 options: wait for another driver 4.0 ICS, or buy a updated micro sim chip. (there is a third option often does't work, but - call carrier support, ask Mobile Service Center Number, set itt in blank space and type first left update. It's a bug and rarelly works)
If this was helpfull, please share the learnigs.
Sent from my XT910 using Tapatalk 2
Sure, I've done it, no use. Micro-sim is new.
We have to wait the ics, I guess)
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?