IS there a difference between the 3 models above Xperia 1 III XQ-BC52/XQ-BC62/XQ-BC72 when it comes to install and utilize Sailfish OS?
I believe, respectively, they are for EU, US, Asia regions.
Here is the bands list:
https://www.sony.com/electronics/support/res/manuals/5027/31a5867184c4e05621cde20ca89c1074/50278073M.pdf
Supported frequency bands
XQ-BC62
5GNR (Bands n1, n2, n3, n5, n7, n8, n20, n28, n38, n40, n41, n66, n71, n77,
n78), LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 32, 34,
38, 39, 40, 41, 46, 48, 66, 71), UMTS HSPA+ (Bands 1, 2, 4, 5, 6, 8, 19), GSM
GPRS/EDGE (Bands 850, 900, 1 800, 1 900), Bluetooth (2.4GHz), WLAN
(2.4GHz/5GHz), NFC (13.56MHz), Wireless Power Charging (110-148kHz)
5GNR : 23dBm, LTE : 23dBm, UMTS : 24dBm, GSM 850/900 : 33dBm,
DCS(1 800)/PCS(1 900) : 30dBm, Bluetooth/WLAN (2.4GHz) : <100mW,
WLAN (5.15-5.35GHz, 5.47-5.725GHz) : <200mW, WLAN (5.735-5.835GHz) :
<25mW, NFC : < 42dBμA/m at 10m, Wireless Power Charging : < 42dBμA/m
at 10m
XQ-BC72
5GNR (Bands n1, n3, n5, n7, n8, n28, n38, n40, n41, n77, n78, n79), LTE (Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 34, 38, 39, 40, 41, 46, 66), UMTS
HSPA+ (Bands 1, 2, 4, 5, 6, 8, 19), GSM GPRS/EDGE (Bands 850, 900, 1 800,
1 900), Bluetooth (2.4GHz), WLAN (2.4GHz/5GHz), NFC (13.56MHz), Wireless
Power Charging (110-148kHz)
5GNR : 23dBm, LTE : 23dBm, UMTS : 24dBm, GSM 850/900 : 33dBm,
DCS(1 800)/PCS(1 900) : 30dBm, Bluetooth/WLAN (2.4GHz) : <100mW,
WLAN (5.15-5.35GHz, 5.47-5.725GHz) : <200mW, WLAN (5.735-5.835GHz) :
<25mW, NFC : < 42dBμA/m at 10m, Wireless Power Charging : < 42dBμA/m
at 10m
[GB] For customers in countries/regions other than the United States and
Singapore:
The 5 150 - 5 350MHz band and the tethering mode (AP mode) in the 5GHz
band are restricted to indoor use only.
[GB] Supported frequency bands
Some frequency bands might be turned off in certain markets or by certain
operators.
You can find your model number under Settings > About phone