1. The lock screen is always inactive
  2. The lock screen does not show the time or date
  3. The lock screen does not show any notifications
  4. The lock screen does not show any photos or videos
  5. The lock screen does not show any messages

Ways to Fix Could Not Activate iPhone Error After Installing iOS 16 Update

Restart iPhone

Apple has released a new software update for the iPhone 8 and 8 Plus that fixes a problem where the phone wouldn’t turn on. If you have an iPhone 8 or 8 Plus, you must press and release the “Volume up” and “Volume down” buttons in that order, then wait for the Apple logo to appear.

Check Wi-Fi network connection

If your Wi-Fi is not working or is unstable, try connecting to another Wi-Fi.

Reactivation with iTunes

If you have an iPhone that has been unable to be activated, follow these steps to fix the issue:

  1. Update iTunes to the latest version.
  2. Connect your iPhone.
  3. Wait for iTunes to detect your device.
  4. Select your device and click the “Activate your iPhone” option.
  5. Enter your Apple ID and password, and then click “Next” to solve the activation error problem

Verify SIM Card

If you are not getting the message “SIM card is not supported,” your iPhone may be locked and you may need to ask your carrier to unlock it. If your iPhone is locked, you may need to try inserting a SIM card and unlocking the phone.

Final Words

If you have an iPhone 14 model and have not yet installed iOS 16, we recommend that you do so as soon as possible. If you have already installed iOS 16, but the activation error still persists, then we suggest that you try the following steps:

  1. Reset your iPhone to its factory settings. This will erase all of your data and settings and restore them to their original condition.
  2. Check for any updates to iOS 16 that may have been released since your device last had a working activation error. If there are any new updates available, install them and then try again to activate your iPhone 14 model.
  3. If none of the above solutions work, then you may need to take your device in for repair or replace it altogether.