New iOS 5.0.1 Build Was Released to Fix 'No SIM Card' Errors?

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Posted December 17, 2011 at 7:15am by iClarified

The new iOS 5.0.1 build released yesterday may have been seeded to fix 'No SIM Card' errors on the iPhone 4S, according to MacRumors.

Based on a new Apple support document, it now appears that the updated build may have been designed to address an issue some users have been experiencing with SIM card-related errors. With the update affecting a relatively small portion of users, Apple may have elected not to push it out to all users in the form of an iOS 5.0.2 software update, and instead rely on those users who are having problems following Apple's advice and obtaining the new build through the restore process outlined as a solution for the issue.

In the support document Apple says that in certain situations, iPhone 4S may have difficulty recognizing a micro-SIM card, resulting in the following behaviors:
● "Invalid SIM" or "No SIM Card installed" alert appears intermittently.
● Status bar displays "No Service" or "Searching" in a location with good network coverage.

To resolve the issue, users are advised to restore their devices through iTunes which would install the new build 9A406 of iOS 5.0.1.

There have also been early reports that the new build improves battery life for some users.

You can find download links for all the various iOS versions here.

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New iOS 5.0.1 Build Was Released to Fix 'No SIM Card' Errors?

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Lucinda - January 1, 2012 at 3:55am

I rellay needed to find this info, thank God!

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Sunny - December 18, 2011 at 5:36pm

After updating 9A406 Both issues resolved after a restore with the latest build on my iPhone 4S. No more searching issue, now Sim card working OK in my 4S.

Max - December 17, 2011 at 2:39pm

Problems that have not been fixed (or mentioned) since 3.1.2: iPod/Music: If lyrics are displayed while listening to a song, there is no way to access the repeat, genius, shuffle, 30s, 2x buttons since they become partially hidden by the lyrics. If one is listening to a book in 2x and uses Voice Control, dismisses an alarm or receives a phone call, listening is resumed at 1x but the icon still indicates 2x

Patrick - December 17, 2011 at 8:06am

Both issues resolved after a restore with the latest build on my iPhone 4S.

This is wrong - December 17, 2011 at 8:02am

No iclarified this is wrong i downloaded the newest update upgraded my 4s and the baseband was updated to 1.0.14 on the 4s since apple was still signing the 5.0.1 1.0.13 i just downgraded i previously wrote a comment about this as well

dt - December 17, 2011 at 2:16pm

Don't download this 5.0.1 revised as it was patched to block any future JB stick wit the older version 5.0.1

cyebog - December 17, 2011 at 7:55am

This is nice. Can the new OS be installed on iPhone 4? will it address the "sim card" issue?