Mobile data working yet comes up with emergency calls only
Bought a HTC one x off a friend and for whatever reason the mobile data works fine, but the phone is saying emergency calls. It's also saying there is an error with the sim or network issue. I've tried my sim in a few other phones and it works as normal, leading me to believe it is an issue with the phone. From what I have read online today, since searching for an answer, these issues can occur on this phone.
I'm looking to solve it as well I need my phone to make and receive calls. All well and good that the data works, but It's something that I need for work also.
Any help or suggestions would be great. I will be upgrading to the HTC One M8 at the end of June, but this is to keep me going until then.
Thanks in advance :)