Easily calculate the value for QXDM's item 06828
While there are a couple NV calculator apps out there, a lot are somewhat limited. Some don't work reliably, while others have limited band selection.
This app, LTE Band Calculator, allows you to select all LTE bands currently in use, and outputs a proper NV value to enter into field 06828, based on which bands you've selected.
On top of the basic calculation, you can also enter an already-calculated value to see the LTE bands it represents.