I am speaking of my personal observations in a completely deployed FIT area in Waco, Texas. In areas between sites when the signal would drop pretty low, the EVO LTE would often lose connection where the others could maintain. If the signal stayed strong or moderate, the EVO LTE would stay connected. And then after losing it and getting back into stronger coverage, the other devices were still on 4G, but the EVO LTE had to be cycled again to get back to 4G. It was very annoying.
Adjusting the scan timer would not have any effect on keeping a signal, only, possibly in initially connecting or reconnecting to LTE. In our tests, adjusting the LTE scan timer had no effect whatsoever on the time it took for the EVO to find a LTE signal on its own. And it was always dead last in ever finding a signal on its own. But most of the time, we got tired of waiting for the EVO to find the signal when all the other devices in our test had connected, that we would cycle through airplane mode.
The EVO is a dog when it comes to LTE Connectivity. It only becomes really apparent when you use it side by side with other Sprint LTE devices. S4GRU owns every Sprint LTE device except the iPhone and Samsung Victory.
Robert