Fix ‘could not activate iPhone/iPad’ errors after upgrading iOS 9.3.2

Apple has released the latest official version-iOS 9.3.2 for iPhone, iPad, iPod devices. However, many users report that they cannot activate their iPhone or iPad after upgrading to iOS 9.3.2. If you are stuck on this situation, here are some possible solutions you can try.
Solution 1:
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If you see the Messages “Could not activate because activation server is temporarily not available”, you just need to active again later. It may be that the Apple’s activation server has shut down because of high demands.
Solution 2:
Try to restart your device
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Press and hold the Power and Home buttons for 10 seconds until the Apple logo appears on the screen.
Solution 3:
After restarting, if you still cannot activate the iPhone or iPad, you can connect your iDevice to computer, and upgrade again with iTunes.

  • Launch iTunes on your Mac or Windows PC
  • Plug your iPhone, iPad, or iPod touch via a lightning cable
  • Click on the device icon at the top left to go to the device tab
  • Click on Check for Update in the Summary pane
  • Click on Download and Update
  • Agree to the Terms and Conditions
  • Enter the Passcode on your iPhone or iPad, if prompted

Solution 4:
If you still fail activating your iPhone or iPad after iOS 9.3.2, you should make a complete restore of your device with iTunes.
Here are some steps to restore iPhone/iPad
Step 1: Download .ipsw file for your device, link
Step 2: Put your device into DFU mode. To do this, hold down both Power and Home buttons on the device for 10 seconds. Release the Power button but continue holding the Home button until the device enters DFU mode. iTunes will provide an alert informing you that it has discovered a device in Recovery Mode.
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Step 3: Connect the iDevice to your Mac or PC then open iTunes
Step 4: In the iTunes interface, hold the Option key on the Mac, or the Shift key on a Windows, then press the “Restore iPhone” button.
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Step 5: When prompted, choose the folder that contains the iOS 9.3.2 firmware you downloaded above step 1. iTunes will go through the process of installing iOS 9.3.2 version to your device.
Solution 5:
Step 1: Firstly turn off your Device
Step 2: Visit iCloud.com and log in your Apple ID and password.
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Step 3: Select Find iPhone > Input password of your Apple ID to confirm > Click All Devices on the top > Select the device, which cannot be activated > Remove from Account > Remove again when note window pops up.
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Step 4: Turn on your iPhone/iPad, and then activate it again.
 
Above are 5 simple solutions that can solve the ‘could not activate iPhone/iPad’ problem. If you still get trouble to activate your iPhone/iPad, please leave your comments below.

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