For the last week I have only been receiving 3G service, not 4G.. I upgraded to 4.1.2 and there have been serious battery life issues but that will be another question. I am more concerned that I am only getting my service in 3G, not 4G. Any thoughts? If it helps I have the original Bionic (still works) and I am in Minneapolis. I have pulled out the SIM card, reset it 10 times, even tried to be patient. Thank you in advance for any advice.