how did you got the update, since I'm with the same provider as you are.
No simlock and No networklock
Rooting status: Bootloader unlock allowed: Yes
Original Software and not rooted.
3.5G wasn't HSPDA+, something that the XS doesn't have (I think)?
Anyway, I never got 3G. Always jumped from H to E.
3.5G = HSDPA
3.75G = HSUPA (HSDPA+)
4G = LTE
meh it isn't a big deal, once you have H you never want 3G.
But it ...