Apple's mobile phone has no internet connection as soon as it makes a call. What happened?

1. The contact between the SIM card of the mobile phone and the elastic sheet of the mobile phone card slot is poor, resulting in the circuit of the SIM card not working, and the mobile phone cannot communicate with the network base station. At this time, you can take out the SIM card, wipe the gold finger of the SIM card with clean cotton cloth and reinstall it.

2. Sometimes, because the surrounding network is not good, the cell phone will cause the signal to be out of service. At this time, we will turn on the flight mode, then turn off the flight mode, and the system will search for network signals again. Turn on the settings in your phone, then turn on the button to the right of the airplane mode option, and then turn it off after a few seconds.

This situation should be an internal fault of the mobile phone, which needs to be repaired.

4. While surfing the Internet on the mobile phone, you need a calling card to open volte calls, and you need mobile phone support. Now ordinary mobile phones support it. Some older models may not support it.

5.iphone 13promax showed no signal as soon as it made a call, so it tried to shut down and restart to search the network again. If it is a dual-card mobile phone, please check whether the SIM card is activated, and set the SIM card manager SIM2 to click the SIM card icon-slide to open (the operation of different models of mobile phones may be slightly different).

6. "Unable to access the mobile network" is displayed on the mobile phone, generally because the calling card does not match the mobile phone. In this case, the network mode is generally changed to "GSM/WCDMA automatic", so that the mobile phone network can choose the correct mobile network. The specific operation steps are as follows: (1) In the opened setting page, select Wireless and Network.