Upgrade to iOS 9 and No SIM Issue? No Problem!

Upgrading your iPhone's iOS shouldn't be a hard thing to do. Everyone does it, and for many, there are no problems after the upgrade is done. However, sometimes, your iPhone might give you an invalid SIM warning, which means you have gone from an iPhone you can use to having a very expensive brick in your pocket. There are, however, ways of fixing this problem. One of the biggest things to remember before you set about fixing your iPhone's invalid SIM warning is that you should back up your iPhone beforehand. Not doing so could result in a loss of data.

Part 1: Fix 1: SIM pull

Doing a SIM card pull to solve an invalid SIM issue is the easiest step to take. The first thing you need to do is ensure that you have already backed up your data on your iPhone. Then:

  • Power down your phone: If you pull your SIM card while trying to fix your invalid SIM issue and your phone is still on, you will likely experience a loss of data.
  • Put a paper clip in the SIM spot: This will eject the SIM card.
  • Inspect the SIM for potential damage.
  • Take a Q-Tip moistened with rubbing alcohol and clean the ends of the SIM card.
  • Let it dry and re-insert.

no sim issue

Part 2: Fix 2: Patience!

Sometimes the invalid SIM issue can simply be a matter of the phone needing time. There have been users who have reported upgrading to iOS 9 and not having service for several hours before the phone suddenly started having service again. If your iPhone is flashing an invalid SIM card warning, power down your device and wait. As frustrating as it is, it may well be worth it in the end.

no sim issue

Part 3: Fix 3: Unlock the Activation Lock

There is a possibility that there is still an activation lock in place which could cause your iPhone to have an invalid SIM. If you go to www.icloud.com/activationlock, you will be able to check whether or not there is an activation lock in place on your phone. Regardless of the cause of your activation lock, that could be the cause of your invalid SIM problem. It's important to check and see whether or not the iPhone was successfully unlocked; if not, you will have an invalid SIM warning. Get it unlocked and the SIM problem will clear.

no sim issue

Having an invalid SIM card can be a very aggravating issue for those who are trying to get their iPhones up and running. However, your iPhone having an invalid SIM card does not mean you have an instant brick on your hands. There are ways of resolving the invalid SIM message that can allow you to use your iPhone right away.

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