What happened when Apple 6 suddenly couldn't open the SMS?

Apple's SMS interface won't open. Maybe the system is not working properly. You can try restarting the iPhone.

If it cannot be solved, it is recommended to refresh the system. IPhone brushing steps:

Step 1: Under normal circumstances, put the iPhone in recovery mode, and then use iTunes to refresh the phone. First, press and hold the power button on the top of the iPhone, and then slide it off after the shutdown option comes out.

Step two. After shutdown, you can start the operation steps of entering recovery mode:

First, press the power button to turn it on, and Apple's logo will appear on the screen. Do not loosen the power button;

Second, then press and hold the Home button of the home screen until the screen is black;

3. When the screen is black, please release the power button and continue to press and hold the Home button on the home screen until iTunes on the computer side detects that an iPhone is in recovery mode;

Note: If you don't enter recovery mode and start normally, please try several times.

Select recovery method:

Step 1. If you want to refresh the iPhone, you need to restore files. The file can be downloaded manually or through iTunes. Either way, manual download may be faster than iTunes download. In addition, if you download it manually, you may download the wrong firmware to unfamiliar friends, resulting in unsuccessful brushing.

Step two. Here's how to make iTunes automatically download firmware and restore it for iPhone. In the iTunes window, click the Restore iPhone button.

Step 3: Then iTunes will connect to the Internet to detect the latest firmware system suitable for the current mobile phone, and prompt whether to delete all data and restore it. Click the "Restore" button to begin.

Step 4: Next, wait patiently for iTunes to download firmware and brush the firmware system on Apple iPhone.

Manually download the firmware and brush it:

Step 1. For friends with strong hands-on ability, you can consider downloading firmware manually. Take the firmware download area of 9 1 iPhone as an example. After opening it, download the corresponding firmware according to your mobile phone model.

Step two. Next, you will see some latest firmware systems. Please select the latest firmware system. Since the iPhone has multiple versions such as Phone and Mobile Unicom, you need to choose the correct version here.

Step 3: After the firmware is ready, you can manually select the firmware to brush the machine. Go back to the iTunes window, hold down the Shift or Option key, and then click the Restore iPhone button.

Step 4, then select the firmware file you downloaded from the Internet.

Step five. Then you will be prompted to delete all the data and restore it, and click the "Restore" button.

Finally, wait for iTunes to restore the firmware system to the mobile phone, and then follow the prompts to activate the mobile phone, and the brushing tutorial is completed.