1. iMore Question's Avatar
    i updated my iPhone 4 to IOS 7.4,,it's successfully updated but i can't open because there are steps to follow..the problem is the sim is required to open it.my iphone is from japan ..not yet unlock ...does have any procedure to open it except for sim requirements ????thanks
    12-11-2013 08:34 PM
  2. iOS Gravity's Avatar
    I think you can hacktivate it. You should check out Youtube for answers as I really don't know much about the iPhone 4 since I personally don't like it. I think you meant iOS 7.0.4. Hope I helped.
    12-11-2013 10:09 PM
  3. Sophia Zhao's Avatar
    You need a certification . Because your update make your phone recover to what in Japan, so you can't use it in your country. You can go to where you get your phone your country, and they can download the authentication to you. And your SIM card can be read by your country's signal. My phone met the same problem with you several months ago, and it was solved now. So have a good luck.
    12-13-2013 05:29 AM

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