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petegates27
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i get "sim not valid" putting new sim in iphone 4s

Got a new sim only for existing iphone 4s. Says sim not valid when trying to authenticate and that service provider needs to unblock phone. Any ideas?

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Superuser
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Re: i get "sim not valid" putting new sim in iphone 4s

Where was the phone purchased as unless it was an Apple store or direct from Apple it will be sim locked to the first carrier sim which is inserted. To unlock you'd have to use a sim card from the carrier it is locked to & request they unlock it. 


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Koala5
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Re: i get "sim not valid" putting new sim in iphone 4s

As above it sounds like the phone is locked to different network, you will need to contact the network that supplied the phone, some charge to unlock others don't. They will only do it if phone is out of contract.

If the phone was running the lastest ios then you don't necessarily need the original sim because the signal to unlock is sent via iTunes.

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petegates27
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Re: i get "sim not valid" putting new sim in iphone 4s

Problem fixed. It was locked to O2. New temp sim and £15 later it was unlocked and now takes the Virgin Sim.
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Forum Team
Forum Team
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Re: i get "sim not valid" putting new sim in iphone 4s

Hey petegates27

 

Excellent news, thanks for taking the time to let us know about this.

 

If you need any assistance in the future you know where we are.

 

Take care

Craig


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