Question about Pantech C300 Cellular Phone

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Phone wont recognize Sim Card

I let me Pantech C3000 totally drain power and now it wont recognize my Sim card. My sim card is fine, works on my other phone. Is there a way to reboot my phone or something?

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  • shaggydog Apr 24, 2008

    my phone wont recognize sim card



1 Answer

Same prob here.. went to an at&t store and they put a new chip into the phone. they couldn't get the existing data xfer'd tho... which sucks. at least the phone is alright.

Posted on Apr 20, 2008


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1 Answer

My phone stopped recognizing my sim card.How do I get my phone to recognize my sim card again?

You can try doing a system reset. Shut off the phone. Remove the battery, & the SIM card. Press any buttons on it around 5 times to discharge any remaining voltage in the phone. Allow the phone to sit for 5-10 minutes to allow any traces of power left to drain. Place the card & the battery back in, & turn on the phone. If the phone is undamaged, it will restart & re-initiate itself without losing any of your files.

Aug 02, 2015 | Blu Studio 7.0 Unlocked 4G Phone

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My pantech is brand new. it worked fine when i first got it but out of no where it keeps saying insert sim. my sim card is already in it. what do i do? this is the secound time this has happened.

Try removing the SIM card and clean the contacts on the SIM card and the cell phone with ethyl alcohol, then replace the SIM card. This will make sure the SIM card makes proper electrical contact.
If this does not work the the SIM card may be faulty, you need to contact your cell phone provider for a replacement SIM card.

Aug 26, 2011 | Cell Phones

2 Answers

Wont load up when sim card is inserted

It's locked to some Network,You need to Unlock it,then only it accept that Network Sim Card,You can try Unlock code at here
moz-screenshot-42.png and Unlock it from Network Lock.

Feb 28, 2011 | Pantech Slate Cell Phone

1 Answer

When i dial a number i get "information unknown SIM error" What does that mean and how can i fix it? I tried shutting off the phone, taking out battery and putting back in and still get the...

Pantech C520 is a very temperamental phone and without the handset in front of me I can only give you a few things to try.

Pull out the SIM card and clean the contacts on both the card and phone. Lightly rub the contacts using a pencil eraser. Replace the Sim card and battery, try to make a phone call. If that did not work place the SIM card into an unlocked phone. Working in this phone then either your handset need to be reset (master) or is broken. Not working in the unlocked phone means your Sim card is bad and need to be replaced.

Dec 19, 2010 | Pantech Cell Phones

2 Answers

My pantech matrix cell phone says insert sim card

This problem arises sometimes because the mobile is unable to read the SIM. May be you should fold a small piece of paper in the same size of the SIM and keep it on top of the SIM and then insert the Battery. I think this will solve your problem.

Jul 21, 2010 | Pantech Matrix Cell Phone

1 Answer

My sellphone get block and now said insetrt sim but the card is there an dstill said the same thing?

First, make sure you have the SIM inserted in the phone correctly. If you do - and the phone still doesn't recognize the SIM card - you may need to replace the SIM card.

This is a common problem with some phones especially when the SIM has been transferred from one phone to another.

Just about the only way to correct it is to replace the SIM card with a new one.

You can purchase one on eBay for a few dollars instead of paying $25 at a retail outlet. Once you receive it, carefully pop it out of the card it is attached to and correctly insert it into your phone.

Put in your battery and turn your phone ON. You should see a 'No Service' message on the screen. If you do, then your phone can now recognize the new SIM card.

Look on the larger card you removed the SIM from and get the SIM number from the card. Then call your service provider and inform them you have replaced a defective SIM card with a new one in your phone. Give them the new SIM card number and in less than 1-minute your phone will be working again.

When it does, the message on the screen will change from 'No Service' to the name of your cellular provider.

Apr 01, 2010 | Pantech C300 Cellular Phone

1 Answer

Sim card

Get a pencil with an eraser on it. Rub the eraser on the gold contacts until they are shiny again as opposed to dull. Use a soft cloth to make sure you remove all the rubber from the surface. Put it back into your phone and try again.

Semper Fi,

Aug 08, 2017 | Pantech Duo Smartphone

1 Answer

Pantech matrix phone doesnt read sim card.

How can I load #'s from my SIM's card to my new Pantech Matrix?

Jan 15, 2009 | Pantech Matrix Cell Phone

6 Answers

Iphone 1.0.2 unlocked does not recognize sim card

Im a wizz with the 1.0.2 Series, do you have msn messenger? I can send you all the files to fix it!


Feb 08, 2008 | Apple iPhone Smartphone

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