How to reset radio setting or phone info settings? topic

I was messing around with my phone and somehow I messed up my radio setting or phone info settings. I am now unable to make or receive phone calls. My phone is stuck on LTE only in the phone info settings (*#*#4636#*#*). If I change it from LTE only to perhaps LTE/GSM or LTE/GSM/CDMA it would work for awhile and I would be able to make and receive calls but if I restart the phone it goes right back to LTE only.

I am trying to avoid resetting my whole phone.

Thanks