Hidden status and nav bar after T-Mobile update

Just took the ota and now I'm on lyz28j. I notice that the notification and soft buttons hide and I can't find a setting to disable it. Is this a new feature in lollipop?

Is there a hidden CID?

I've changed my CID to Supercid with "fastboot oem writecid 11111111"
In bootloader it seems to be OK, but the CID Getter app allways shows me my old CID.
Scrolling down the CID Getter i can see an "ro.cid" whith the old CID value.

In the One M7 there was an hidden CID, not easy to change. Maybe in M9 is too?

Status bar hidden on home screen. How to fix?

All of a sudden the status bar on my Galaxy S6 is hidden on the home screen. Any idea why/how to fix it?

Edit: someone messed with my Nova settings. Fixed now. Mods delete thread? sorry and thanks

Excessive brightness of LG G2 - Hidden menu

Hello everybody,
I've recently bought a LG G2 and the screen is too bright, and it is not possible to reduce to an acceptable brightness level in the settings. So I thought to change this parameter in the hidden menu ( 3845#*805# ), but I couldn't find where it is. Does anybody know where can I find this parameter at the hidden menu?

Thank you!