How to fix Different SIM Detected Error on iPhone 3G/3GS/4 after Activation with Phonebook SIM

iPhoneby Imran Hussain

A new hacktivation patch has been released by Sherif Hashim which lets users jailbreak their phone with JailbreakMe and use Phonebook SIM to activate. All you need to do is install a package from Cydia while using your phonebook SIM card and then swap it with your carrier SIM card.Capture

From Cydia:

This package allows you to swap SIMs after activation with a phonebook SIM. You won’t get the SIM change detected error. Hacktivation will patch a system file on your phone, preventing future activation and keeping your current activation even if you change your SIM.

Here are the steps in detail:

  1. Insert your Phonebook SIM card.
  2. Start Cydia and go to Manage tab.
  3. Go to Sources, and tap Edit on the top. Tap on add.
  4. Add this source: http://cydia.pushfix.info
  5. When Cydia is done reloading the repos, type Hacktivation Patch in search and install it.
  6. Remove phonebook SIM card and insert your carrier SIM.
About the Author

Imran Hussain is the founder and editor of iThinkDifferent, which he launched in 2008 to cover Apple news, reviews, and how-to guides. He has spent over 15 years writing about iOS, macOS, and the wider Apple ecosystem, with a focus on hands-on guides - installing developer betas, troubleshooting, and walking through new features on his own devices. Based in Dubai, he also loves to cover photography, gaming, and the tech industry more broadly on his social media profiles.

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