Question about Sony Ericsson Z300i Cellular Phone

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Sony Ericcson z300i - "Insert correct sim card"

Hi - I took my sony ericcson z300i to a network shop to get it unlocked from that network. They tried to unlock it, and said they did, but when I put in either the old sim or a sim from my new provider it now says "insert correct sim card" and wont exit from this msg.
It is an old phone that I was trying to use again because my newer phone broke. But I still used it for an alarm clock. This is all I want to be able to use it for now, because I ended up buying a new phone.

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Hello, hearing your story I can only say that your was not unlocked or can't be unlocked depends if for example was it an offer?
Or they did not have the unlocking program for the phone

Try another repair shop


have a nice weekend

Posted on Sep 12, 2009

  • Yahfattah99 Aug 19, 2011

    I need code solution

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Posted on Jan 02, 2017

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