Iphone 1 1 server authentication failed.

Apple id server authentication failed. The specific steps are as follows:

The connection error of 1.Apple ID server may be the network connection problem of the mobile phone network, or the mobile phone or the system itself.

2. First of all, we need to confirm whether there is a system setup problem. Open the cellular mobile network interface of iPhone, and open the setting options.

3. We checked the cellular data in WLAN and cellular mobile network settings and returned to normal.

4. If you still can't solve the problem of verification failure, you can turn off the phone and restart it, and then log in to the AppleID account after restarting the phone.

5. We can also choose to restore all the configured network data by restoring network settings. After the repair, the problem can generally be solved.