January 24, 2026
ANSWERS / IPHONE

Does Gevey Ultra S Work on iOS 6?

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sandys101
sandys101 • September 19, 2012 at 7:20pm
Will the Gevey Ultra S SIM still unlock my iPhone 4S if I upgrade to iOS 6?

Answers

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iClarified
iClarified • September 20, 2012 at 3:08pm
According to Applenberry, the Gevey Ultra S for the iPhone 4S was initially not recommended for iOS 6 because it had not been fully tested at the time of the software release. Since then, user reports have indicated mixed results. While some individuals managed to get a signal by re-inserting the SIM tray multiple times, others experienced frequent No Service errors or signal loss. If you rely on an interposer SIM unlock, it is generally safer to stay on a supported firmware or seek an official IMEI unlock to ensure stability on iOS 6.
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moosekhalil
moosekhalil • September 27, 2012 at 5:20pm
I upgraded an iPhone 4S from iOS 5.1.1 to iOS 6 that was using a Gevey SIM. After the update, it initially showed No SIM. After ejecting and re-inserting the SIM tray a few times, it eventually detected the network. It appears the device should be unlocked with the Gevey prior to the firmware upgrade for the best chance of success.
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CmdPopNFresh199
CmdPopNFresh199 • October 3, 2012 at 1:53pm
The unlock appears to be temporary on iOS 6. I managed to get an iPhone 4S to show a signal for about 15 minutes, but it eventually reverted to a No Service error. It does not seem to be a stable solution for this firmware version.
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