First you'll need:
SAMSUNG USB Driver
Now follow the quick start guide HERE, skipping steps 12-30.
1. open QXDM.exe and go to NV Browser and select filter LTE then click 06828 then click one of the values then click read.
2. copy the string that shows up into a decimal to binary converter. As an example mine is 600196852264287. This converts in binary to
to remove bands its the same process, convert to binary and replace the 1 with a 0, note that the start of the string has to be a 1, if it isn't simply remove the zeros in front of the next 1 then convert that to decimal (the size will be significantly smaller but that's fine, the higher the band number the more value it puts into the string) an example of this is i have band 4 disabled on my phone, i took the 4th from last 1 and made it a 0 and converted that to decimal and it now reads as 600196852264279, notice the last 2 numbers changed, that's the value of band 4 in the string. Band 2 equals 2 and Band 5 equals 16, and so on.
If I helped you please hit the thanks button!