I am in Illinois, went on vacation to Colorado and Michigan in the last 2 weeks. In all 3 states, in multiple cities, I have little to no reception or internet. I usually have 0 or 1 bar and then a O. I've only seen LTE a handful of times. I didn't even realize I had LTE for a while. People have a hard time hearing me saying that I am going in and out and my calls constantly drop. I switch my phone off and on at least once per week. I also reset my Network Settings, but it hasn't helped. Is there anything else I can try before having to bring it into a store?