HI. I have no solution, and can only share my experience. (4 SXT LTE kits in France , 3 on SFR, 1 on Bouygues, given up on Free)
What your screenshots learn me:
MCC 222/ MNC 88 = Wind Telecomunicazioni SpA has a 4G / LTE / (Evolved 3G) band , and probably the next in the list is a 3G band.
You are connected to LTE (commercially called 4G, but not yet technical full 4G)
RSSI/RSRP/RSRQ not that easy to interpret: https://www.cablefree.net/wirelesstechn ... ement-lte/
"RSRP levels for usable signal typically range from about -75 dBm close in to an LTE cell site to -120 dBm at the edge of LTE coverage."
Your signal is not very strong for an SXT device. I hope you can still set it outside in the best possible position and direction.
It's not easy to find the exact tower just using the ID values on the operators maps. https://lteitaly.it/
, https://italianviaggio.com/mobile-sim-n ... t-for-you/
But with those maps I was able to identify the tower we use most, by its antenna direction and freq band used, and could aim the SXT's accordingly.
It is i WIND who decides which tower is serving you. But you can sometimes steer this with the allowed bands (and also cell lock, something I didn't try yet)
With a too low signal the connection can fall back to 3G. (Something you can disable for LTE1 in the General setting under "Bands".)
Round trip delay for Evolved 3G (LTE) should be around 30 - 40 ms. But if the 4G network is congested it can go up to above 1000 ms.(Something we have strongly with SFR in juli/august, and much less with Bouygues as provider, but who has stopped selling high quota subscriptions for that region.) Some ISP's just overbook their capacity too much. "Free" on the other hand checks the IMEI, and if it is not one of their smartphones, just trim the quota to 3 GB/month.