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==Introduction to Dual SIM functionality==
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==Introduction to Dual SIM Functionality==
 
{{{model|FMB630}}} is able to operate in DUAL SIM switching mode to minimize the bill accounts for
 
{{{model|FMB630}}} is able to operate in DUAL SIM switching mode to minimize the bill accounts for
 
GSM/GPRS services. To use this mode, 2 SIM Operator list enumerated value must be chosen for
 
GSM/GPRS services. To use this mode, 2 SIM Operator list enumerated value must be chosen for
Profile Change On setting in Global parameters tab after {{{model|FMB630}}} is connected to configurator
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Profile Change.
(shown in Figure 49).
   
When DUAL SIM operating mode is set: profile 1 becomes Home, profile 2 becomes SIM 1
 
When DUAL SIM operating mode is set: profile 1 becomes Home, profile 2 becomes SIM 1
 
Roaming, profile 3 becomes SIM 2 Roaming and profile 4 becomes Unknown Operator. In this
 
Roaming, profile 3 becomes SIM 2 Roaming and profile 4 becomes Unknown Operator. In this
 
chapter the operation and configuration of DUAL SIM mode is presented.
 
chapter the operation and configuration of DUAL SIM mode is presented.
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* '''Home Network'''
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{{{model|FMB630}}} gets possible operator codes list from the network and compares them with the operator codes
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inserted in Home profile’s list. At first, it tries to connect to SIM 1 Home Operator, if operator is
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unreachable; the device switches to SIM 2 slot and tries to connect to SIM 2 Home Operator.
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When the connection procedure is successful, FMB630 stays connected to the available
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Home operator using the SIM card, which was inserted for and works according to the Home
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profile parameter settings.
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If none of the Home operators could be connected with, FMB630 switches to the SIM 1
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card tries to connect to its roaming operators from SIM 1 Roaming profile.

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