[lgfaver]

So i am thinking of getting one, my question is for those who have already made the purchase.
I understand it's the STL 100-3, but which of the two versions is it?

[raino]

RFK121LW, but it doesn't seem to matter.

[lgfaver]

well I've bought a bunch of z10s since it first came out.
I've had both versions.
I currently have a white one(121fw) and the 91LW(on black). Tried both of them with my 4gLTE at&t sim and only one of them gets 40MBPS speeds, the other one gets just up to 22MBPS

[raino]

The only difference between the two--on paper--is a single UMTS band. I can't say exactly what caused the difference in speeds, but it could not have been a different set of LTE bands.

[lgfaver]

The only difference between the two--on paper--is a single UMTS band. I can't say exactly what caused the difference in speeds, but it could not have been a different set of LTE bands.

thats exactly what I thought but for whatever reason, the white one gives me better LTE speeds and it's a considerable difference.