So I picked up the galaxy s7 for sprint and im looking at the signal strength and its showing between 1 and 3 bars but when i go into about device> status > sim card status; the db doesnt match up to what is showing in the bar grap at the top of the phone. I did a side check with an iphone and it is showing 4 bars where my su is showing 1 to 3, anybody have any ideas as fo how to fix it.