Black shark's cell phone is disconnected. Others can't get through, there is internet. I can't get through to other people's phones, and the network is disconnected. What happened?

There are several possible reasons for this:

1. Network signal problem: First, confirm whether your mobile phone has enough signal coverage area. A weak network signal may cause the phone to fail to connect or disconnect. Try to move to an area with better signal coverage, such as an open area away from buildings or obstacles.

2. Operator problem: Check whether the SIM card you are using and the operator are working normally. Sometimes, network failure or service interruption of the operator may cause the call to be unable to be established or the network connection to be interrupted. You can call the operator's customer service hotline and ask them if they have any network faults or problems.

3. Mobile phone settings: Check whether the settings of your mobile phone are correct. Make sure your phone is not turned on in airplane mode or silent mode, and check whether the call restriction and interception functions are enabled. You can also try to restart the mobile phone network connection or restart the mobile phone in the settings to correct possible temporary problems.

4. Software or application conflict: Sometimes, some third-party applications may conflict with the phone function of your mobile phone, resulting in the phone being unable to talk or the network connection being disconnected. Try using the phone in safe mode (press and hold the power button and select "Restart to Safe Mode") to eliminate any possible application conflicts.

If none of the above steps can solve your problem, I suggest you contact the customer support of your mobile phone manufacturer or operator, who can diagnose and solve your problem more deeply.