I have a Samsung Note 5 that seems to insist finding and holding onto AT&T's lousy LTE Band 30 with its poor - 115 db signal and besides the missed and dropped calls it's killing my battery in about 9 hours. They (AT&T) should provide a way to turn this band 30 off or take my phone back. Add this poor cell signal with the fact that Samsung just makes weak poorly designed antennas and this almost $800 phone is practically worthless as a phone.