Question about Samsung SGH-a777 Cell Phone

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My Samsung SGH-A77 won't boot up past the AT&T splash screen

Whenever I hold down the power key to turn it on, I get the AT&T splash screen for a couple seconds and then the screen goes blank. Neither replacing the battery or SIM card or plugging it in helps. I'm not sure what caused it to stop working--it seems to have happened spontaneously.

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Posted on Jan 02, 2017

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SOURCE: glitching screen on samsung SGH a777

MY SAMSUNG SGH-A-777 SIM NOT UNLOCK.I TRY IT BUT NOT SUCCEFUL ME,PLEASE HELP ME.

Posted on Jun 13, 2010

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SOURCE: My samsung sgh-u900t seems to be working except

Fred - my phone did exactly the same thing in Dec 09. I can see it is turned on - I can even log in by looking at the bottom screen (which lights up when a text message comes in) but the top main 2.2 inch screen is black (with a light lit behind). Is it the same as yours and, if so, how did you resolve it?

Posted on Aug 13, 2010

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