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Sony Xperia Z4 (known as Sony Xperia Z3+ in Europe). Smartphone with 5.20-inch 1080x1920 display powered by 1.5GHz processor alongside 3GB RAM and 20.7-megapixel rear camera. It was released in 2014.

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Phone not responding to anything

Phone won't turn off, screen has fixed picture no controls...

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1 Answer

If holding the power button for 30 seconds or more does not work, I recommend letting the battery completely drain. Then charge it to see if it turns back on. Your logic board may have gone bad.

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warners.p will be eternally grateful.
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