Question about Samsung SCH-u740 Cellular Phone

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Will not boot up I believe the boot has been locked

My daughter had dropped her new Samsung SCH-U740 cell phone in the pool. The Screen and battery are fine.. But it will not boot up... I hit a few keys Held CLR and C. and a mesage came up Download started EMERGENCY @ USB_ISR at the top of the screen... At the bottom of the screen it says Bootlock Version: u740:ZL05.2. I took it to the Verison Store and they would not help me.. They said the warranty was void.. and they could not help me.. This was a very expensive phone.. and I bellieve that it can be fixed. Even a guy at a cellphone repair store said that I had to deal with Samsung.. I think they just want me to buy a new phone... Can you help me?????

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  • 7,752 Answers

What you need to do is take the phone to a mobile service center and have them fully service the phone, then reflash the firmware on the phone this will fix the issues.

Posted on Jan 20, 2008

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1 Answer

U740 samsung white screen, phone still works


Is there any instance that you dropped the phone or exposed it to any type of liquid?
I think you need to have a replacement LCD for the phone.

Jun 18, 2009 | Samsung SCH-u740 Cellular Phone

1 Answer

Don't know lock code.samsung sch u740


Below are two known methods for unlocking your phone.

To unlock a Samsung turn the phone off take the sim card and type the following code *#pw+15853649247w#

Master reset(unlock) #*7337# (for the new samsungs E700 x600 but not E710)

Good luck, hope one of those works for your phone. Not 100% guaranteed to work on all models. Thank you for stopping by Fixya!

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take the phones to a professional mobile store and have them fix it for you

Sep 04, 2008 | Samsung SCH-u740 Cellular Phone

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Well you know now that the warranty is void, so you should take the phone to a mobile service center and have them service it to try and have it working for you again......but most water/liuid damaged phones are like a 50/50 chance of working again.

Aug 14, 2008 | Samsung SCH-u740 Cellular Phone

1 Answer

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Jun 18, 2008 | Samsung SCH-u740 Cellular Phone

1 Answer

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hey, have you checked your battery.  that happened to me, then i realized that my battery was on backwards.  so it could be your battery

Apr 08, 2008 | Samsung SCH-u740 Cellular Phone

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Did you try taking out the battery and letting it dry. Depending on how wet it got, your battery may need to dry out or the phone is damaged. My friend dropped his in the shower, took 2 days for the battery to dry out and it was fine.

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1 Answer

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I am not sure on your phone but the screen on my wife's u740 turned white right after I dropped it. I had to get a new phone because I didn't look into replacing the lcd first. That was the discription of my problem from verizon was a pressure crack in the LCD. I hope that helps.

Nov 25, 2007 | Samsung SCH-u740 Cellular Phone

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