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Template:FMB640 Dual SIM (view source)
Revision as of 08:33, 14 October 2020
, 08:33, 14 October 2020no edit summary
GSM/GPRS services.
GSM/GPRS services.
SIM1 card has higher priority than SIM2. For one SIM
SIM1 card has a higher priority than SIM2. For one SIM
card using it must be placed in SIM1 slot for FMB640 to switch minimum times. (SIM1 SLOT is closer to PCB, SIM2 SLOT
card using it must be placed in the SIM1 slot for FMB640 to switch minimum times. (SIM1 SLOT is closer to PCB, SIM2 SLOT
is the upper one).
is the upper one).
If SIM card is inserted into SIM 2 slot and 1 SIM operator list mode is used, FMB640 will
If a SIM card is inserted into SIM 2 slot and 1 SIM operator list mode is used, FMB640 will
work normally, but there will be more switching activities. In addition, APN settings in GPRS
work normally, but there will be more switching activities. In addition, APN settings in GPRS
should be entered for SIM 1 and SIM 2 to avoid not sending records over GPRS.
should be entered for SIM 1 and SIM 2 to avoid not sending records over GPRS.
{{{model|FMB640}}} gets possible operator codes list from the network and compares them with the operator codes
{{{model|FMB640}}} gets possible operator codes list from the network and compares them with the operator codes
inserted in Home profile’s list. At first, it tries to connect to SIM 1 Home Operator, if operator is
inserted in the Home profile’s list. At first, it tries to connect to SIM 1 Home Operator, if the operator is
unreachable; the device switches to SIM 2 slot and tries to connect to SIM 2 Home Operator.
unreachable; the device switches to the SIM 2 slot and tries to connect to the SIM 2 Home Operator.
When the connection procedure is successful, FMB640 stays connected to the available
When the connection procedure is successful, FMB640 stays connected to the available
home operator using the SIM card, which was inserted for and works according to the Home
profile parameter settings.
profile parameter settings.
If none of the Home operators could be connected with, FMB640 switches to the SIM 1
If none of the Home operators could be connected with, FMB640 switches to the SIM 1
card tries to connect to its roaming operators from SIM 1 Roaming profile.
card tries to connect to its roaming operators from SIM 1 Roaming profile.
