Question about Sony Ericsson K850i Mobile Phone

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On my screen it says insert sim,or view demo of the phone this phone first,press demo.my sim card is working but nothing happening on phone.

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  • 630 Answers

Is this a new phone? If so check that you've inserted the SIM correctly and it's not SIMlocked to another network

If it's worked before remove the SIM and GENTLY clean the contacts on the phone and the SIM with a pencil eraser.

Posted on Jun 30, 2009

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1 Answer

Phone not recognising sim card. Window pops up which says 'insert sim card or to view a demo of this phone first press Demo"


Sim contacts may be dirty, either on the card or phone.
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be careful not to spray too much into the phone, as once the spray gets inside it takes longer to evaporate. You can counter the time by using compressed air to speed drying of the phone interior without taking it apart.
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It says insrert sim card, or to view a demo of this phone first, press Demo. whilst there is a sim in it


Make sure the sim card is inserted in there correctly and if its still not reading the sim card it might have a Bad sim card reader

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This is happening because when the Sim card is not inserted you cannot access the menu of the phone some nokia phones(including yours) are built that way.

Some nokia phones do not need a sim card for you to access the phone menu (e.g 5130,5230), while you can only view the demo of some nokia phones (e.g 1208, 1600) without a sim card

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Hello

To avoid this kind of problem from recurring;

Make sure your Sim card is properly inserted

Make sure you avoid hitting the phone on objects and also avoid dropping the phone because this can make the Sim card shift out of place

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Hey i'm having the same problem with mine, u prob got it sorted by now but i found that it is because my sim card is so old, tested it with my friends brand new sim card and works fine, 
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