Apple mobile phone dual SIM dual standby setting method.
1. iPhone dual SIM dual standby setting.
1.Open the Settings app and go to the Cellular option.
2.In the cellular network, you can see the toggles for "Cellular Data" and "Enable 3G". If your phone supports 4G networks, you can also see the "Enable 4G" switch.
3.Below the cellular data, you can see the option of two SIM cards. By default, one primary card and one secondary card are enabled.
4.If you need to set up dual SIM dual standby, you can tap the two SIM card options to set it up. In the settings of the primary and secondary cards, you can choose to enable or disable the data and voice functions, respectively.
5.If you need to set a default SIM card, you can find the options for "Default Voice Number" and "Cellular Data" under Cellular Data.
2. Precautions for dual SIM and dual standby.
1.When using the Dual SIM Dual Standby function, you need to pay attention to whether the mobile phone supports the Dual SIM Dual Standby function. If not, you may experience issues such as an unstable signal, inability to call**, or inability to send text messages.
2.When using the dual SIM dual standby function, you need to pay attention to the power consumption of the mobile phone. Since using two SIM cards at the same time will increase the power consumption of the phone, it is necessary to charge it in time or use a power bank.
3.When using the dual-SIM dual-standby function, you need to pay attention to whether the mobile phone supports dual-band communication. If the two SIM cards belong to different carriers or different network standards, the phone needs to support the corresponding frequency band to use it normally.
4.When using the dual-SIM dual-standby function, you need to pay attention to whether the mobile phone supports dual-standby voice and data functions. If you are using two SIM cards at the same time, you need to set up voice and data functions separately so as not to affect the call or Internet experience.
The above is the relevant introduction to the dual SIM dual standby setting of Apple mobile phone, I hope it will help you!