Apple launched the iOS 8.0.1 update in the early morning of September 25. This upgrade is mainly about the improvement and repair of some minor problems. However, many users found that the SIM card of the mobile phone upgraded to the system was unavailable and the Touch ID was invalid after the upgrade. It is recommended that users wait for the updated version to upgrade.

This time, the new system version number is iOS 8.0.1, and the upgrade capacity of iPhone 6 Plus is 72.2MB. In terms of size, there is not much upgrade content.

The above figure shows the details of the upgrade, but it seems that nothing is particularly worth looking forward to from these problems. Remind the user again that the SIM card and Touch ID may become invalid due to this upgrade. It is not recommended to upgrade.