Configuring APN Profiles (Dual SIM Cards)
Context
An access point name (APN) identifies an external PDN (for example, the Internet or IMS network) that users want to access.
You can create an APN profile to configure an APN. In the scenario where dual SIM cards and a single APN are available, you can create two APN profiles, bind one to the primary SIM card and the other to the secondary SIM card, and bind the two APN profiles to the same 3G cellular interface. The two SIM cards connect to different 3G networks. When the account balance of the primary SIM card is insufficient, the primary SIM card is faulty, the 3G link signal quality is poor, or the connected 3G network is faulty, traffic is automatically switched to the secondary SIM card, ensuring uninterrupted enterprise services.
The primary and secondary SIM cards cannot simultaneously work. Upon a SIM card switchover, traffic is interrupted for a short period.