Mine just did the same exact thing. I came onto the forum to search for my answer and found this without looking to hard as it was the top post. Weird.
I just looked under mobile network options and it was set to global not 1XEV. Does it make a difference?
If you usually don't travel abroad then YES! If you set it too 1XEV you will notice a substantially longer battery life, especially in a low signal area...
Well I found an explanation of "SOS" on our blackberries, I did a "google" search and found this at blackberrycool.com
The SOS indicates that you can only place emergency calls. Usually this means that you have a bad SIM card in your device, either one that has been corrupted or one from another carrier that is not compatible with your BlackBerry. You will either need to replace the SIM with a SIM from the carrier of your handheld or get your BlackBerry unlock. This feature is actually something that the carriers don’t really advertise. Where you are able to place emergency calls to 911, even if you don’t have a carrier account, just need a working cell phone.
