hardware issue - Xperia Z3 Q&A, Help & Troubleshooting

Today I was walking with my z3 on my back pocket, I fell and hit on my phone. Now after that, it's not vibrating anymore; and whenever I turn on the flash, I can't turn it off, only if I turn the phone off. How can I fix that?

Related

Why won't my screen stay off?

Quite frequently when I hit the red button the screen goes off and then instantly comes back on. If I repeatedly hit the red button it just keeps going off and then popping back on. Sometimes it does go off, sometimes it doesn't.
Other times it goes off and then later for no apparent reason it comes back on.
Any ideas?
Turn up your backlight
It's a bug. I know it sounds ridiculous, but this happens when your screen brightness is set to 40% or less. Turn the brightness up, and the problem goes away.
Nice, I turned up my brightness and so far so good...
Thanks.

[Q] Can't see anything on display

WARNING: not a native english speaker.
when I try to start the phone the following occur:
the display light turns on, shortly after that the phone emits that startup vibration, the backlight remains on for aprox. 85 seconds then the phone aparently shuts down. that meant, the backlight of the display turns off.
problem history:
I was at work and as usual i was listenin to music via handsfree. while my phone was in poket it seemed that somehow my poket pressed the sleep button and turned the screen up. no prob here. i got the phone out of ma poket. reverted the volume @ maximum and then locked the phone and turned the screen off and putted back in pocket. after some time i wanted to change the song. got out the phone, turned on the screen but nothink apeared except a horizontal line in the middle of the screen. I tried to shut down/up the screen but nothink apeared. after a couple of tries the screen turn on but it was unusual what i saw on it. I saw a sketch of the energy rom home screen with diferent colors.
Meantime i was tryng to get the screen outta sleep the music still played in the phones.
I thaugt that a reset will do but it didn't. got out the battery and got home. reasembled it, powerd up the phone and voila! the phone started up normaly. got out the battery, introduced the sim card. powerer up the phone but bad luck. the happiness was short lived. the problem camed back. another thing i noticed is that when i powwer on the phone i let it on but it wont output that energy rom bootup sound.
Can someone elude me with whats the problem with my phone?
hope I was clear enough!
Have a great day/night!
UPDATE: LEFT IT OVERNIGHT WITHOUT THE BATTERY AND NOW ASSEMBLED BACK. IT'S WORKING BUT I THINK IF I GIVE A RESTART THE problem will come back.

[Q] [help] Phone is constantly vibrating even when off

My phone just arrived. I've plugged it in to make sure it's alive, it stated low battery so I've unplugged it and moved elsewhere. Now ever since I plugged it back in, it vibrates, constantly. It even plays vibrates over the top of it's constant buzz. It operates perfectly fine otherwise, it boots and I've set up my google account. Just curious if there was a way to solve this besides waiting out the battery.
Edit: smothering the power button to force it to turn off, even when it refuses to turn on due to lack of battery or even show anything on screen does stop the vibration. Guess it's a faulty device or something :/ *sigh*
Turns out that as soon as it vibrates it continuously vibrates at a low mode forever. So it can be fine until you plug in a charger, or receive a notification, then it's back to perma vibrate.

Screen will not stay OFF during a phone call

I recently started having an issue that when I make a phone call and then hit my power button to turn the screen off, it keeps popping back on after a few seconds. It will not stay off.
I dont think its a proximity sensor issue because when I hold it to my face or cover it with my finger, the screen will go off.
Its not good because when I make a call and then turn the screen off and put it in my pocket, the screen will come on and buttons get activated. I have noticed that if I dial and THEN hit HOME key and then use power button to deactivate, screen will stay off. But I dont always remember to do it that way and dont understand why suddenly just using the power button no longer works.
Any advice?

Question Phone Randomly Powers Off (I Have to Manually Turn It Back On)

It usually happens when I haven't used the phone for an hour or two and I usually have to hold the power button for about 15 seconds for it to turn back on.
Does anyone else have this issue? I see a 'reboot' thread but in my case it turns off and doesn't turn back on. Do you guys think this is a hardware issue?
Everything is stock.

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