{{{model|FMU1YX}}} has two SIM card slots. GPRS settings and Roaming Operators can be configured separately for SIM1 and SIM2. In ''SIM2 Roaming/Home Operator'' list home operator must be added to any part of the list to enable correct functionality. Dual SIM operator search functionality works the following way:
{{{model|FMU1YX}}} has two SIM card slots. GPRS settings and Roaming Operators can be configured separately for SIM1 and SIM2. In ''SIM2 Roaming/Home Operator'' list home operator must be added to any part of the list to enable correct functionality. Dual SIM operator search functionality works the following way:
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[[Image:Fmb125_dual_sim.png|400px|none]]
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[[Image:Fmb120_dual_sim.png|400px|none]]
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===Ban List Control===
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'''Enables''' or '''Disables''' the banning of mobile operators after encountering connection issues.
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When the Ban List Control setting is enabled, the device will attempt to connect to operators normally. But, if either the device fails to connect to a selected operator after several attempts due to weak cellular signal, or a GPRS detach (disconnection) occurs, this operator will be "banned". That means the device will no longer attempt to connect to this operator and continue trying other operators. <br />
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The operator ban lasts for 5 minutes, and is logged in a banlist that can be accessed using an SMS/GPRS command - ''banlist:X'', where X refers to groups of 10 records. <br />
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This banlist contains records of banned operator codes, remaning ban time, reason for ban, and a counter of how many times this specific operator was banned.