The LTE is enabled so I don't understand why this is happening. My phone isn't making any calls and the texts aren't going through unless connected to WiFi. As for cellular data usage, my "current period" is at 621 MB and my "current period roaming" is at 0 bytes. How do I solve this problem so that my phone makes calls, and my LTE and 4g work again? Thank you so much! This is for an iPhone5.
AT

my carrier is AT and T