Accidentally changed APN setting now no call/text but data connection is fine topic

I was out in the country trying to get my phone connected to a network as the rest of my family (same plan) had connections with their iphones. Low and behold a new setting shows up in mobile networks that I had not seen before, Access Point Names. My biggest mistake was changing settings in something I knew nothing about but I did and pressed restore factory default. Once I reached an area that had a data connection, it seemed all worked well until I tried to send a text. I soon found out I couldn't send or receive any texts/calls.

I've flashed to stock, updated prl, and nothing has worked. I tried to change apn settings using those from this site 4GLTE, but it proved futile. Now I'm stuck and more frustrated than I was before I couldn't get service.

I feel like an idiot and really could use some help! Thanks!