Huawei MAR-LX1B Guide De Démarrage Rapide page 7

Dual Card Dual Standby Single
Pass
Your device supports only dual card dual standby single
pass, which means you cannot use both SIM cards for calls
or data services simultaneously.
•
When you are on a call using SIM card 1, SIM card 2
cannot be used to make or answer calls. If someone
calls SIM card 2, the caller will hear a voice message
similar to "The subscriber you dialled is out of the
service area" or "The subscriber you dialled cannot be
connected for the moment, please try again later." The
actual message will vary by service provider.
•
When you are using SIM card 1's data service, SIM card
2's data service will be disabled.
Your device's single pass feature helps reduce power
consumption and increase your device's standby time. It is
not related to your service provider's network conditions.
•
You can enable call forwarding between SIMs on
the device to avoid missed calls.
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