I do have voice and data roaming turned on. I recently switched from Verizon to Sprint to be on my fiancee's plan since we are getting ready to get married. My parents live in a US Cellular area. The past two years I have always roamed on US Cellular's 3G/LTE. I came down here to my parents house today for the first time since switching, and I noticed that my new Iphone 5s only picks up an Extended 1x signal down here with Sprint. I have been on the phone with them and nobody seems to know what they're talking about and none of their suggestions have worked. Why would I be able to pick up the standared 1x roaming signal, but not the 3G/LTE signal? Thank you in advance.