As title, i've just bought a z10 on amazon and it appears it is the SLT100-4 meant for verizon in the us and not the SLT100-2 meant for UK carriers. I'm currently on orange in the UK, but going to ee for 4g, i've looked at the bands and the -4 says it uses 700mhz lte, but ee uses 800, 1800 and 2600mhz. Sooooo, should I return it?