Question about Sony Ericsson K850i Mobile Phone

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If you in set sim but gives amessage that there is know sim

Posted by bashiru zombra on


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There are four possibilities available.
1.Check your sim whether it's properly inserted or not
2.There may be a problem in your sim card so try another one.
3.Your mobile locked to particular network provider.
4.You mobile phone receives weak signal from near tower so try to Switch off your mobile,wait few seconds and switch on.
If your problem persists,Your mobile phone restricted by some network.So try to unlock your mobile phone.You can unlock your mobile phone using network unlock code.It's the best way to unlock your phone.If you need an unlock code for your phone visit I hope it will be very useful to you.

Posted on Jun 19, 2013


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Consult Virgin to get the proper settings for their network. Your phone is still carrying the old settings from your old provider, thats why it giving you this error. I believe Virgin has these settings available on their homepage, otherwise give them a call and let the supporter help you through the setup process.

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