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Old March 10th, 2011, 01:29 PM   #1 (permalink)
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Notsure sim card invalid problem

hello guys
today i bought the optimus gt540, and played with it for a while without a sim card in it. later when i inserted a brand new sim card, the phone didnt recognise it, says invalid card. the card works on other phones, and other cards work in the optimus.
i also put a pin code protection on the sim, and when optimus starts up it asks for the pin code.

please help

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Old March 10th, 2011, 04:15 PM   #2 (permalink)
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This issue has been reported for 1.6 a few times. Updating to 2.1 fixes it.
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Old March 10th, 2011, 06:14 PM   #3 (permalink)
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ive updated it and its still bugging me :\
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Old March 10th, 2011, 08:29 PM   #4 (permalink)
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Hmm I'm no expert but perhaps try a hard reset. You will lose ALL personal data if you do though (apps, contacts etc).
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Old March 11th, 2011, 12:18 AM   #5 (permalink)
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did that too, no help
is the only soludion a new card?
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Old March 11th, 2011, 01:10 AM   #6 (permalink)
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Well if that failed, maybe take it to the place you bought it from and ask them about it. It might be a hardware issue.
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Old March 11th, 2011, 01:39 PM   #7 (permalink)
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I had the same problem, went back where I got the phone and they told me they had the same problem and just gave me the new sim card with the same number because my sim card was like 5 years old, and since then everything works just fine so I guess you will have to do the same. Even though I had some problems with sim card, like it would just tell me no sim card and then it would come back to imput PIN, but since I upgraded to 2.1 everything works perfectly fine.
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The LG Optimus is LG's second addition to the Android world. Rockin' Android 1.6, a 3 megapixel camera, and a 3" touchscreen, the LG Optimus is a good choice for someone looking for a low end Android device. ... Read More



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