After upgrading to iOS 7.0.6, I get intermittent "invalid SIM" error.

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Level 1

31 points

After upgrading to iOS 7.0.6, I get intermittent "invalid SIM" error.

After upgrading to iOS 7.0.6, I get intermittent "invalid SIM" error where the carrier strength (top left corner) should be. Of course I loose all data and cellular connections at that time. The only workaround is to power the device off and back on. I have to do this at least once every 2 or 3 days since the upgrade to 7.0.6. Anyone else having SIM related errors since the upgrade?

This happened once before when I first updated to iOS 7. The next patch that Apple sent out resolved the issue, and I haven't seen it again until now.

I hear 7.1 may be coming out as soon as next week. Any chance this issue is resolved in that release?

iPhone 5, iOS 7.0.6

Posted on Mar 4, 2014 2:45 PM

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Answer 1

ChrisJ4203

Level 10

236,339 points

Mar 4, 2014 2:46 PM in response to eROCK1

I've not heard of many of these. Why not check with your carrier and see if they will replace your SIM? Otherwise, here is a support document that addresses SIM issues. http://support.apple.com/kb/TS4148

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Answer 2

eROCK1 Author

Level 1

31 points

Mar 4, 2014 2:55 PM in response to ChrisJ4203

Thanks for the input. That link shows steps that I've already taken. I know it sounds weird, but I believe it may be software related. Like I said before, this happened once before when I first upgraded to iOS7. I lived with the issue, having to reboot the phone every couple of days, until the next update from Apple. Once they sent out the next update, the problem went away.

If it is not software related, then it must be a corruption of the software download and installation. I did it over the air. Possibly downloading whatever release comes out next will fix it because it's a new installation. The software itself may not have the fix in it, but the act of downloading and installing the new software may fix it. Just a thought...

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Answer 3

ChrisJ4203

Level 10

236,339 points

Mar 5, 2014 12:29 PM in response to eROCK1

If you want to test that theory, you can always restore your device from a backup. Connect the device to the computer and iTunes, then create a backup. From there, restore to that backup. The act of restoring will put the latest software on the device.

I still bellieve I would check with my carrier and see if they would provide a new SIM card. That could be the problem as well. I know you may consider that hardware, but the SIM contains data that connects to the phone via the contacts, and if they are not consistent, then you would see this type of error.

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