Hello, and welcome to the forums.
Have you connected the Socblue device to your PC and checked to see if there might be any firmware updates or the likes for your unit yet?
Also, do you have the first release SGS3 (i9300) or do you have the LTE/4G version (i9305). If the latter, it might not be fully compatible with the LTE module in your phone and need to have an updated firmware.
Do you use a stock rooted ROM, or have you flashed a custom ROM to it? There could be compatibility issues there as well. I’m not a dev so I’m really no expert, but I thought I’d offer at least some logical starting points for troubleshooting.