Strange your problem, there is much need for an update but from Airtel for 5G SA mode, meanwhile the Rog5s must work in 5G NSA with the following frequency bands.
Il y a au moins une bande de fréquence compatible (3300MHz), vérifie que 5G SA ne soit pas coché
The 5G bands are those of the ROG5s version C according to the ASUS site, published at the release in Android 11, it is to be hoped that asus did not break them with Android 12
🙂If you are good in NSA and it still does not work, try a manual search for the 5G network, it should show you the Airtel 5G and 4G antennas then go back to auto
rog 5s for india
C version: (EMEA, UK, APAC, HK, IN, ID, BR)
5G (Bands N1, N3, N7, N8, N20, N28, N38, N41, N77, N78, N79)
FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28)
TD-LTE (Bands 34, 38, 39, 40, 41, 42, 48)
Airtel 5G
n1(2100), n3(1800), n8(900), n78(3300) ok