Hello, why occurs Two Problems That Have Sprouted In SBCGlobal Email Configured On Apple iPhone After iOS 10 Update?

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iOS System Recovery Guide How to Fix with Various iOS System Issues

either send in to a place for repair and diagnostics ---or if icloud disabled you bought a parts phone

Yes, you can. The easiest way is to update the iOS system in the Settings app. Also you can resort to iTunes to do that. Follow the instruction below.

If you can't update iPhone iOS software wirelessly throug WiFi connection, you could give iTunes a try. As the all-inclusive iOS device manager center, iTunes provides multiple effective assistances for you, including: backing up iOS devices, restoring iOS devices, transferring iOS data files, and updating iOS devices. You could follow the below steps to learn how to update iPhone software with iTunes in detail:

1. Install the latest version of iTunes on your computer.
2. Connect your iPhone to your computer via the USB cable.
3. Open iTunes and select your device.
4. Click "Summary > Check for Update".
5. Once iTunes detects the available update, click "Download and Update".
6. If asked, enter your passcode. Then iTunes would start to update iPhone iOS software. When it's finished, disconnect your iPhone with computer.

For more methods, check: How to Update iPhone

There are many ways to update iPhone. The easiest way is to update via air. Certainly, iTunes is another great choice. Just follow below steps.

Update iPhone to iOS 12 via Air
1. If a pop-up panel shows you that iPhone latest version iOS 12 is available, you can click on the "Install Now" button to start to update iPhone to iOS 12.
2. It is also accessible to check out if iOS 12 is available manually now. The following steps will instruct you to make it.
a) Connect iPhone to a good Wi-Fi network and make sure your iPhone storage is enough. You also need to ensure that the battery of your iPhone can support the update.
b) Click on "Settings > General > Software Update> Download and Install" successively and iPhone will start to download and install iOS 12 right away. Wait until the update is completed.

Update iPhone to iOS 12 via iTunes
1. In order to use iTunes to update iPhone to iOS 12, you can first download iOS 12 IPSW file from this website (click here).
2. Run the latest version of iTunes on computer and insert iPhone to computer.
3. Click on iPhone icon on iTunes interface and then hit "Summary> Check for Update".

4. Choose the IPSW firmware file that you have downloaded beforehand by performing the following actions in iTunes: >
Mac: OPTION + Click on the "Update" button in iTunes
Windows: SHIFT + Click on the 'Update' button in iTunes

5. Navigate to your computer folder to choose the IPSW file and then click on "Update" button to confirm that you would like to install iOS 12 in the pop-up panel.

6. Wait until the update is over and iOS 12 is installed on iPhone. In the end, your iPhone will reboot with iOS 12 successfully installed.

For more details, check: How to Update iPhone to Latest iOS 12