Ive tested my SIM in others FMB920 and its ok, but in this one the hardware just close GPRS connection every single time.
<[2020.08.11 21:57:16]-[REC.SEND.1] check gprs
:!<[2020.08.11 21:57:16]-[REC.SEND.1] gprs is closed, try to open
[2020.08.11 21:57:16]-[NETWORK] [APN.LIST] Opening GPRS: APN:prepago.ancel;USER:BAM;PASS:BAM
[2020.08.11 21:57:16]-[NETWORK] ERROR @ m2m_network_api.c(2006):[GPRS.OPEN.0364] Error: 9
[2020.08.11 21:57:16]-[NETWORK] [ERROR.HANDLER.0364] Caller: 0/gprs open, code: 9
[2020.08.11 21:57:16]-[REC.SEND.1] Retrying to open gprs in 2s
:!<[2020.08.11 21:57:17]-[OVERSPD] Unsatisfied Conditions:
:!<[2020.08.11 21:57:17]-[SLEEP] WARNING @ 176:Sleep:2, not allowed! Reason:Ignition
:!<[2020.08.11 21:57:17]-[WD.FUNC] WARNING @ 181:counter:0 Cnt:1715 Limit:10800
:!<[2020.08.11 21:57:18]-[REC.SEND.1] Periodic sending already started @ main server, state: 2 / check gprs
:!<[2020.08.11 21:57:18]-[REC.SEND.1] Waiting Link Tmo @ main server, state: 2 / check gprs
:!<[2020.08.11 21:57:18]-[REC.SEND.1] check gprs
:!<[2020.08.11 21:57:18]-[REC.SEND.1] gprs is closed, try to open
:!<[2020.08.11 21:57:18]-[NETWORK] [APN.LIST] Opening GPRS: APN:prepago.ancel;USER:BAM;PASS:BAM
:!<[2020.08.11 21:57:18]-[NETWORK] ERROR @ m2m_network_api.c(2006):[GPRS.OPEN.0364] Error: 9
:!<[2020.08.11 21:57:18]-[NETWORK] [ERROR.HANDLER.0364] Caller: 0/gprs open, code: 9
:!<[2020.08.11 21:57:18]-[REC.SEND.1] Retrying to open gprs in 2s
:!<[2020.08.11 21:57:19]-[LiPo] PreCharge state:50
:!<[2020.08.11 21:57:20]-[AXL.CLBR] All acc data updated (150/150)
:!<[2020.08.11 21:57:20]-[REC.SEND.1] check gprs
:!<[2020.08.11 21:57:20]-[REC.SEND.1] gprs is closed, try to open
:!<[2020.08.11 21:57:20]-[NETWORK] [APN.LIST] Opening GPRS: APN:prepago.ancel;USER:BAM;PASS:BAM
:!<[2020.08.11 21:57:20]-[NETWORK] ERROR @ m2m_network_api.c(2006):[GPRS.OPEN.0364] Error: 9
:!<[2020.08.11 21:57:20]-[NETWORK] [ERROR.HANDLER.0364] Caller: 0/gprs open, code: 9
:!<[2020.08.11 21:57:20]-[REC.SEND.1] Retrying to open gprs in 2s
:!<[2020.08.11 21:57:22]-[OVERSPD] Unsatisfied Conditions:
:!<[2020.08.11 21:57:22]-[REC.SEND.1] check gprs
:!<[2020.08.11 21:57:22]-[REC.SEND.1] gprs is closed, try to open
:!<[2020.08.11 21:57:22]-[NETWORK] [APN.LIST] Opening GPRS: APN:prepago.ancel;USER:BAM;PASS:BAM
:!<[2020.08.11 21:57:22]-[NETWORK] ERROR @ m2m_network_api.c(2006):[GPRS.OPEN.0364] Error: 9
:!<[2020.08.11 21:57:22]-[NETWORK] [ERROR.HANDLER.0364] Caller: 0/gprs open, code: 9
:!<[2020.08.11 21:57:22]-[REC.SEND.1] ERROR @ m2m_task_recsend_1.c(400):Failed to open gprs
:!<[2020.08.11 21:57:22]-[APN.LIST] search has been reset
:!<[2020.08.11 21:57:22]-[APN.LIST] trying op:0
:!<[2020.08.11 21:57:22]-[APN.LIST] state changed: 3 -> 4