Right now, I am on a 5S and my GF is on my Note 3 (switched due to unfixable Android Wifi Battery Drain bug). At her work, the Note 3 switches between 1 bar of 1X (unusable, no calls or messages go through) and no service. My 5S there switches between a usable 1 bar of LTE and 3 bars of 3G. Obviously, the M8 will have better reception than the Note 3 just because its not a Samsung. But, does anyone have any experience comparing to a 5S?