i want to have question about my Xperia Ultra Z C6833

i just current bought a new Xperia Ultra Z Model C6833 White Model
i want to ask if C6833 will get 4G net work or LTE
i current use T-Mobile
i want to ask another question does the Xperia Ultra Z C6833 have screen protector build in? already or i have to buy screen protector ? to cover?
please help and answer
am newbie
thank

C6833 WiFi & MicroSD Card won't work on all AOSP/CM Base ROMs.?

I wonder about my C6833, the Micro SD Card & WiFi work fine with all Stock & all Stock Base ROMs.

But when flash any AOSP/CM ROMs the Micro SD Card don't detect and WiFi won't turn on.

Thanks in advance.

(I am on Unlock BL.)

:laugh::laugh::laugh: