I can phone them and receive a call and I can send them a text but cannot receive them in return
I've cleared cache, reset my network settings, restarted my phone and tried multiple texting apps with no luck
Is it a SIM card issue? Do I need to order a replacement card? I've literally tried everything that google can tell me with no avail
Best answer by Dinh
If it was just one contact issue, the issue could be from that person also. I would suggest you ask the person to do the same as you did.
You could also try to delete the whole sms conversation with that person and start a new text and see if it can help. As you might lose some information in the sms text, you can take a screenshot of the text and save it, if you would like.