Since people often don't like change, I could see a mad rush once the merger is approved but before it takes effect. The first of three hurdles has been jumped (national security demand that parent firms get rid of Huawei has been accepted). DOJ and FCC remain.
At least in Samsung markets with AirHarmony small cells, the PCI of small cells is 450 or greater. EARFCN would be another way, but that sometimes gets location specific. GCI would be another way, but then you would need to know the MM cutoff point for each market (we have those for Ohio)
The app already uses EARFCN as the primary means to identify the LTE band.. it will try to match a GCI pattern first, but if there are no matches or the "guessed" band does not match EARFCN data that appears to be valid, it uses the EARFCN instead. Since there are so many B14 sector possibilities right now, I don't think I will continue adding them beyond what is programmed now. Most newer devices on newer Android builds are properly reporting EARFCN, with some exceptions (issues with B66/B71 most notably). GCI pattern matching has become most useful to identify "special" cells (MM/SC/MB/Airave/etc) as well as multiple carriers.
I know this was answered elsewhere, but for the benefit of anyone who comes along later -- a small cell second carrier has been identified that follows the same GCI pattern as one sector of a Mini-Macro second carrier. Since the app has no way to know which one it is, it displays both indicators when this occurs.