I was observing LTE performance. The Sprint store where I went, is on a cell edge. They have no repeater. The signal levels were all -107 to -110 dBm except for the N5 and GS4 which hung around -97 dBm.
On my phone, the G2, I looked at both your SignalCheck Pro and the network strength under "settings, about phone", which agreed. The store display phones I looked at, I used "settings, about phone..."
I held the devices and switched them between my right and ledt hands. The signals remained pretty consistant throughout my testing. After all, I was in a Sprint store. I was limited as to what I could do with tethered phones.
Rudimentary at best, but I wanted to see how well the One Max RF reception was compared to my G2. As long as I was there, I looked at the few other popular devices as well.
Nothing scientific, but it cured my curiosity...