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i just finish update to my iphone 3gs but after it gives me no service and cant' read my sim card..what can i do??
no i just bought it used and i use it for 1 month but i start to creat itune account then update softwaer after it gives me that no service and cant' read my sim card..thanks
Could be that the phone was unlocked illegally or was hack to unlocked it which is why you are getting this message.
where did you buy this use phone from.
you can use the search engine, look for the threads with the green check mark.

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