If you've ever seen an error code on your phone, then you know they can be confusing. Carrier fault code 179 is no exception. This error code indicates that there is a problem with the SIM card in your phone. The SIM card is what allows your phone to connect to the cellular network, so if there's a problem with it, your phone won't be able to make or receive calls.
There are a few different things that could cause this error code. One possibility is that the SIM card itself is damaged. Another possibility is that the SIM card isn't inserted correctly into the phone. If you're getting this error code, try taking the SIM card out of your phone and re-inserting it. Make sure that it's inserted all the way and in the correct orientation. If that doesn't fix the problem, then you may need to get a new SIM card from your carrier.
If you're seeing carrier fault code 179, don't panic! This error can usually be fixed pretty easily. Just follow the troubleshooting steps above and you should be back up and running in no time!