Ok, so I got this phone about a month ago, and it has been working fine with calls and everything. Well today I tried making a call and it said, "Mobile Network Not Available." I was just wondering what is going on with my phone.
Were you in a different location, with little to no signal perhaps? Try removing and reinserting the SIM card to re-establish a network connection. Checkk to be sure your cellular data is turned ON, Mobile Network set to LTE/CDMA mode (not global).