Use ``--opmode=OPMODE`` in cmdline mode or column ``OPMODE`` in csv mode
to specify OPMODE as listed below.
Details:
The ``EF_AD`` field contains administrative data (AD).
It consists of four bytes ``B1``, ``B2``, ``B3``, ``B4``,
and optionally further bytes for future use.
Previous implementation only sets the MNC field appropriately
(located in `B4`) and sets all other bits/bytes to 0.
However, `B1` also defines the *UE operation mode* (see below).
For type approval operations, such as testing with a test uSIM,
this value could be set to `0x80` rather than `0x00`(= normal operation).
This may unlock some UE capabilities that are restricted in
normal operation mode.
Excerpt from [ETSI TS 131 102, 4.2.18](https://www.etsi.org/deliver/etsi_ts/131100_131199/131102/04.15.00_60/ts_131102v041500p.pdf):
```
B1 - UE operation mode:
Coding:
Initial value
- '00' normal operation.
- '80' type approval operations.
- '01' normal operation + specific facilities.
- '81' type approval operations + specific facilities.
- '02' maintenance (off line).
- '04' cell test operation.
B2 - Additional information:
Coding:
Reserved for future use
B3 - Additional information:
Coding:
- B3.b1: OFM setting (Ciphering Indicator)
- B3.others: Reserved for future use
B4 - Length of MNC in the IMSI:
Coding:
- B4.b4..B4.b1: length: '0010' (= 2) or '0011' (=3)
- B4.others: Reserved for future use
```
**Legend:** Byte X, bit Y: BX.bY
Further reading: https://nickvsnetworking.com/usim-basics/
Change-Id: Ie9040c6b127c268878a0845ed73d0918ec6bbb08
d0505bdb55