Question about LG Vu CU920 Cellular Phone

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My lg vu does not recognize the sim card. this is a recent problem and i have not changed sim cards. the sim card will work in other cellphones. Also different cell phones will not work in the lg.

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When a SIM works in other phones and no other SIMs work in the particular phone, there is a phone issue. Somehow it has become corrupted and it will need replaced promptly. If purchased new from AT&T less than one day ago, it is under warranty as long as there is not liquid or physical damage. If purchased refurbished from AT&T less than 90 days ago, it is under warranty as long as there is not liquid or physical damage. If neither of these apply and you have insurance, use it and there will be a $50 deductible applied to your next bill. If not purchased from AT&T, seek replacement from ebay, craigslist, or a gophone (put your sim in the phone... it will have your phone number, contacts, and information and you won't have prepaid service).

Posted on Oct 02, 2009

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You can take your card in and have it replaced if you call customer service and let them know the problem.if the card worked before but stoped working you may need to do a soft reset( note a soft reset will not erase your personal data) but will reset the phone.
both of these will cost you nothing. now in case neither of these work then i would service or replace your cell phone

Posted on Nov 11, 2009

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Posted on Jan 02, 2017

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1 Answer

Lg vu problem


Try getting your sim card changed or the sim card reader in your phone fixed

Feb 23, 2010 | LG Vu CU920 Cellular Phone

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Insert sim card while sim card inserted


There is an IC inside that has the job of dealing with the SIM. When this IC goes bad, your phone stops recognizing the SIM. Please get it changed from the service center.

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Will a boost mobile sim card from prepaid phone work in my unlocked lg vu


Yes it should if the LG mobile phone is unlocked. If not, when you insert the Boost SIM card in the LG it will ask for a Secutity Code.
If the SIM card won't work in the LG, please get back to me.

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1 Answer

LG Vu Sim Card problem


I've dealt with this issue ever since I bought this phone - and would rather throw it across the room and watch it burst into 1,000 pieces than have to see the error pop up again. All I did was cut out about 1-inch by1/4" inch strip from a postcard - or any heavy weight paper. In other words, not cardboard, but not copy paper. More like the weight of a vhs cover box, cereal box, etc. I inserted one end of the strip above the sim card and below the phone shell (over the part of the sim card that's not showing); and folded the rest of the paper strip (might have to tear some off) to be double ply above the part of the sim card that is showing. Put on the cover; you should have to press firmly to get it to fit on and smash the double-ply strip down. Make sure the double ply is only over the sim card, not any over the battery. This worked for me!

Dec 18, 2009 | LG Vu CU920 Cellular Phone

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Remove the battery, remove the sim card, then you will see the pocket for the sd micro chip, or memory card, put it in the pocket and it will snap in

May 19, 2009 | LG Vu CU920 Cellular Phone

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i just got mine and noticed the sim card can go in upside down. the same thing happened when i put mine in. try putting the sim card in different ways

Mar 18, 2009 | LG Vu CU920 Cellular Phone

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My LG VU is not reading my sim card but when i put Sim card in another phone is works


The sim card goes in the other way. The cut should be on the bottom left facing up. Try it and see if it works.

Jan 24, 2009 | LG Vu CU920 Cellular Phone

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