My X is showing extremely high time without a signal numbers, although I have never seen it without a signal. Today after 13 hours 34 minutes and 31 seconds of "time on," it shows 46% time without a signal. Yet when I look at the bar showing mobile network signal in the battery use screen, there are only a couple very slim red bars, presumably when I go into the parking garage at work, where there truly is no signal. Yesterday it was 24%. I have never had any other phone register more than 1 or 2%. Does the X measure the signal differently? Is it measuring LTE signal? I have a microcell at home and we have a network repeater at work which will cause it to be on 4G rather than LTE. I am at a loss. What are the rest of you seeing? Any ideas?