Another thing I'd like to add, I can not force the modem to connect to just n41. It would seem that T-Mobile is using n25 on this particular tower as the main carrier band and n41 as the secondary band.
EM9191 running below listed firmware version
Code: Select all
AT!IMPREF?
!IMPREF:
preferred fw version: 03.09.14.00
preferred carrier name: GENERIC
preferred config name: GENERIC_030.047_000
preferred subpri index: 000
current fw version: 03.09.14.00
current carrier name: GENERIC
current config name: GENERIC_030.047_000
current subpri index: 000
OK
Code: Select all
Available:
0 - GW:
1000000000000000 - B19 (850)
0004000000000000 - B9 (1700)
0002000000000000 - B8 (900)
0000000008000000 - B6 (800)
0000000004000000 - B5 (850)
0000000002000000 - B4 (1700)
0000000001000000 - B3 (1700)
0000000000800000 - B2 (1900)
0000000000400000 - B1 (2100)
1 - LTE:
1/0000800000000000 - B48
1/0000200000000000 - B46
1/0000020000000000 - B42
1/0000010000000000 - B41
1/0000008000000000 - B40
1/0000004000000000 - B39
1/0000002000000000 - B38
1/0000000200000000 - B34
1/0000000080000000 - B32
1/0000000020000000 - B30
1/0000000010000000 - B29
1/0000000008000000 - B28
1/0000000002000000 - B26
1/0000000001000000 - B25
1/0000000000080000 - B20
1/0000000000040000 - B19
1/0000000000020000 - B18
1/0000000000010000 - B17
1/0000000000002000 - B14
1/0000000000001000 - B13
1/0000000000000800 - B12
1/0000000000000080 - B8
1/0000000000000040 - B7
1/0000000000000010 - B5
1/0000000000000008 - B4
1/0000000000000004 - B3
1/0000000000000002 - B2
1/0000000000000001 - B1
2/0000000000000040 - B71
2/0000000000000002 - B66
3 - NRNSA:
1/0000010000000000 - n41
1/0000000008000000 - n28
1/0000000000000010 - n5
1/0000000000000004 - n3
1/0000000000000002 - n2
1/0000000000000001 - n1
2/0000000000004000 - n79
2/0000000000002000 - n78
2/0000000000001000 - n77
2/0000000000000040 - n71
2/0000000000000002 - n66
4 - NRSA:
1/0000010000000000 - n41
1/0000000008000000 - n28
1/0000000000000010 - n5
1/0000000000000004 - n3
1/0000000000000002 - n2
1/0000000000000001 - n1
2/0000000000004000 - n79
2/0000000000002000 - n78
2/0000000000001000 - n77
2/0000000000000040 - n71
2/0000000000000002 - n66
OK