Question about Pantech Matrix Cell Phone

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Restarts while texting

Pantech Matrix c740 randomly restarts (power on screen, SIM checking) while typing text message. So far I can tell it only happens when using the QWERTY keyboard, and editing (going back to earlier text to fix something) almost guarantees a reboot. Phone is less than 1 month old. AT&T said to return to store for new unit, but based on others' comments, I'm wondering if it's a known issue.

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  • Anonymous May 23, 2009

    When im texting, the phone just shuts off and restarts. It does not matter which keyboard i use it still restarts. It happpens when i am reading over what i type to make sure i do not have any errors. and when i fix the error, it just shuts off. I have to type the whole message again. It does it at least once a day.
    I have seen that many people have the same problem.
    I would like to know how to fix it; or maybe i should tell at&t to send me another one.
    If anyone knows how to fix it or something, just tell us! Thanks(:

  • LoveMySox15 May 25, 2009

    I have this same problem. EVERYDAY. This is the 2nd matrix I've owned becuase of it and it STILL does it. I returned the first one after a month and got a new one and I've had it since december and I just want to throw it of a cliff. I HATE THIS PHONE. Anyone reading this DO NOT GET THIS PHONE!!! This is the worst phone discusion I've everrr made. When I returned mine for the first time the guy told me I had to just let it rest for a while each day and I tried that but it's b.s. it's a cell phone it's made to be keep on. No matter what I did it kept doing it and doing it. I even asked the guy if this happens to everyone who has the phone and he simply said no I've never heard this before. I have no idea how to fix it but just know that your not the only one who has a shitty phone. Everyone got screwed over with this one.



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  • 54 Answers

It's a very common issue for the matrix. there is no know fix for this as far as i know. i have the same problem. it's very irritating.

Posted on Sep 22, 2009

  • SandalMan424 Feb 27, 2010

    Yes it's common, very, very annoying but common. Only solution is to save those longer texts to drafts periodically so you don't loose the text.



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1 Answer

Pantech c740 unlock code imei 011917001521014

Get the unlocking service from your network provider or you may get it from . After getting the code, you may follow the instructions here,

1. Switch ON your Pantech C740 with its ORIGINAL SIM card.
2. Type *#865625#.
3. A SIM Unlock Menu will appear, press OK.
4. Enter Unlock Code.
5. Re-enter Unlock Code.
6. Pantech C740 will display Unlock Process Complete. Press OK.
7. Your Pantech C740 is now unlocked.

ORIGINAL : We mean, to use the sim card that was originally given to you by your network/service provider along with the Pantech C740.

If you have any doubt in this, visit this .This will provides the complete guidance for you.

Jul 25, 2011 | Pantech Matrix Cell Phone

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My pantech freezes.

is your phone touch screen .then kindly go to screen calibration adjust your screen as it instruct

Apr 08, 2010 | Pantech Matrix Cell Phone

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Power button

I can help you with your Pantech Matrix.

Here's how you turn your Pantech C740 Matrix Cell Phone on:


I hope that helps.
Download Pantech C740 Matrix Manual Here.

Mar 13, 2010 | Pantech Matrix Cell Phone

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It will not sent or recieve pictures, it just says

AT&T has a block they can put on texting, but they also have a block they can put on Multi Media messages. If text comes through, but not picture messages, chances are the phone number has that multimedia block on. Call them and ask them to check and see if your line has "multimedia restrictions" then they will look for that, and they can probably take that block off for you. They don't always check that one, sometimes you have to know more than they do..

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Pantech Matrix Randomly resetting and "Sim Checking"

It has happened to me many times(VERY frustrating) it apparently is a common problem that can't be fixed. The only thing I can recommend is when your typing a long text periodically save it to drafts so if it does happen you wont loose all of the message.

Aug 18, 2009 | Pantech Matrix Cell Phone

2 Answers


I have the same problem on mine. I'm sure its not a key stroke, because I get the same thing in portrait view, and I've also had it reset on me when I was renaming pictures. Also, I let it sit on the composing message screen for a while, and then tried to just type a letter and that set it off as well.

Aug 11, 2009 | Pantech Matrix Cell Phone

1 Answer

Pentach Matrix C740: restarts while texting

The EXACT same thing happened to me, so they gave me a new phone. It's only happened once or twice in the 2 months since ive gotten it replaced, so i deal.

Jul 12, 2009 | Pantech Matrix Cell Phone

1 Answer

Unaudioalble Speakers And Keeps Turning Off.

I can help you with your Pantech c740 Matrix Cell Phone.
It sounds like your phones firmware is corrupted.
I recommend trying to update the system software of your phone.
Review the users manual for the auto-update options.
It is available here.

I hope that helps.

May 26, 2009 | Pantech Matrix Cell Phone

1 Answer

Pantech Matrix reboots during text msg

Unfortunately this is just a common matrix problem there really isn't any fix. my guess is the phone just sort of gets over loaded and reboots itself.

Apr 19, 2009 | Pantech Matrix Cell Phone

1 Answer

Can anyone help?

Pantech matrix C740 from at&t

To enter the SIM unlock code, do the following:
1. Put AT&T SIM card in C740
2. Turn on
3. Enter *#865625# on idle screen
4. SIM Unlock Process - Click Yes.
5. Enter 8 digits unlock code and click OK (soft key)
6. Re-enter the unlock code.
7. Unlock Process Complete
8. Click OK (soft key).

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