Develop Bugs

Volume down/mute

Got it this afternoon... Noticed that the volume keeps turning full down to mute with no input from me...
Faulty phone or a software issue? Anyone else seen this?
R
Sent from my Galaxy Nexus using XDA App

rakh1 said:
Got it this afternoon... Noticed that the volume keeps turning full down to mute with no input from me...
Faulty phone or a software issue? Anyone else seen this?
R
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
You're not alone. There's a few people begin to report they have the SAV-Ghost issue (self-adjusting volume) in this thread: http://forum.xda-developers.com/showthread.php?t=1352545

You are not alone. A handful of people commented on that at in the 24hr thread. I named it the SAV -ghost. (Self adjusting volume ghost)

Thyrus said:
You are not alone. A handful of people commented on that at in the 24hr thread. I named it the SAV -ghost. (Self adjusting volume ghost)
Click to expand...
Click to collapse
Surely it should be either self-adjusting-volume or volume-adjusting-ghost? It can't be SAV-ghost because if it's a ghost adjusting the volume then it's not self adjusting!

Lol you have a point there. Lol. Damn there goes my contribution to android -naming the first galaxy Nexus bug.. ah well I still call it sav-ghost

HooloovooUK said:
Surely it should be either self-adjusting-volume or volume-adjusting-ghost? It can't be SAV-ghost because if it's a ghost adjusting the volume then it's not self adjusting!
Click to expand...
Click to collapse
It's a ghost he can convince the phone to adjust the volume by itself. Come on everybody knows that.
Sent from my HTC Desire using XDA App

Questions regarding this issue:
Does it only decrease volume?
Can you reproduce it?
how often does it occur?
Any apps you have installed that might interfere with volume in any way?

maybe this was the reason for all the delays, sounds like a software problem especially if they released the phone, can't be hardware if they knew of this issue

Well too early to say I would need some info to narrow it down.. I don't think it is sw at the moment. I twittered some other experienced users and they're have not seen such on their device. So could be user app related (market apps) or hw batch issue.

As far as I can remember this was occurring when the phone was vanilla. Only ever adjustable down. Have fought it several times with up volume but it is like the down volume key is locked on. However, down volume key appears fine so I don't think this is mechanical.
R
Sent from my Galaxy Nexus using XDA App

justabrake said:
maybe this was the reason for all the delays, sounds like a software problem especially if they released the phone, can't be hardware if they knew of this issue
Click to expand...
Click to collapse
Did they officially release the phone ?

They just put ICS on the SGS2 phone I wonder how's that working out

i have this problem. Hope its not hw issue.

randypurcz said:
Did they officially release the phone ?
Click to expand...
Click to collapse
I thought the release date officially was the 17th
They released them didn't they, they just didn't appear out of the sky,
This must be the reason why all the delays on this Recall if it's a hardware for sure software can be fixed,
I know they said they ported ICS over to the SGS2 phone I'm wondering if that has the same problems if not then it's hardware for sure

thought it was just my imagination at first....i hope it is software, i have already unlocked the bootloader so byebye warranty
happening to this many people, it seems software, not hardware related
tried experimenting, making sure that there was no way there was any pressure on the volume key
one thing which seems to confirm that it is software - hold volume down, dont let go, and then hold volume up at the same time. the volume goes up instead of having a battle....anyone concur?
that and, in bootloader mode it doesn't seem to be cycling through the options when left alone for a while

garok89 said:
I have already unlocked the bootloader so byebye warranty
Click to expand...
Click to collapse
Not true, it is relockable like Nexus S. Not like Nexus One.
Sent from my Nexus S using XDA App

Righty then, really willing to help you guys.
garok89 said:
hold volume down, dont let go, and then hold volume up at the same time. the volume goes up instead of having a battle....anyone concur?
Click to expand...
Click to collapse
Thats actually normal. This is how it is supposed to behave, no battle anticipated. Same behaviour on my 3 phones.
Again, my questions:
- Which volume is affected? Media volume, ringtone volume or all volume (master). When this happened, what did the display say which volume is being adjusted?
- Up and down, or down only (ie decrease only? or up down as it wants)
- If you have seen it adjust volume and it says "Media Volume", did it also happen during a call (which would then say call volume or similar). It is really important as both volumes are actually independant from each other. Meaning if more than one type of volume is affected, it may point more towards hardware than software. I can hardly believe that ICS or any app for this matter would trigger this behaviour in different threads/apps.
- Can you reproduce it? If so, please help us with logs to see whether HW or SW (see below)
- Can you interrupt this behaviour by either holding VOL up or VOL down? If you can interrupt it, does it keep doing it or would your interference stop the SAVing for a while?
- State of phone. Was the phone in use or did that happen with display off (if you come back after a while and the Volume is lower?
- If it did, go to the settings and volume - are all volume bars now lower or only one?
So, as far as I heard, it even happened with vanilla handset without apps right?
can you guys execute DDMS (comes with the Android SDK) and check the logs?
i.e. when it happens, you will be able to see the debugger code lines. The code as to WHEN and when it happens would be very important to see whats causing this behavior. Little pic attached for those that want to try
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Once you reproduced the issue, copy the relevant lines (you can verbose the log) here?!

The volume ghost happened this morning again when my alarm went off. I was already awake and I heard my alarm go off with just one beep and then silent. When I picked it up I saw the volume was down again and then had a battle with it pressing volume up but the phone was insistent on going down. So it must be all volumes getting turned down and not just ringer volume cause even if phone is on silent, the alarm should still go off as normal. At least it did on my N1.
Moral of the story, don't trust the alarm to wake you up cause it may just turn itself down leaving you sleeping in.
I am hoping its sw related cause I love this phone and don't want to return it!
Sent from my Galaxy Nexus using XDA App

@seakins please have a look at my questions. Also check when it does that are all volume settings down or just the one (alarm in that case)

I'm having the same problem. It usually happens when i unlock the phone, but has happened at other points, too.
I really hope this isn't hardware-related.
---------- Post added at 08:25 AM ---------- Previous post was at 08:23 AM ----------
Thyrus said:
@seakins please have a look at my questions. Also check when it does that are all volume settings down or just the one (alarm in that case)
Click to expand...
Click to collapse
In my case, it's just notifications and ringer. Media and alarm volume are unaffected.

Some Complaints about the i747

Coming from an HTC Vision running CM. Here are my complaints. Maybe there are easy fixes for them. Dunno... (my phone is rooted)
1. Battery drains faster than car can charge it. With screen on, GPS on, and data on and using navigation, the battery goes down. This hasn't happened with any of my other phones.
2. There is no simple way to go to speech recognition/input from the keyboard. On the keyboard on my last phone, there was a microphone button on the keyboard I could press to bring up speech recognition.
3. There is no widget you can put on the homepage that immediately opens up voice search. Last phone, I hit one button on the home screen and I said "set alarm for twenty minutes" or "text lisa smith I'm running late" or "Dial dominos pizza" and it just did it.
4. I can't seem to control what kind of data connection I am using. I use to be able to specify to use 2G if I wanted on the last phone.

synpax said:
Coming from an HTC Vision running CM. Here are my complaints. Maybe there are easy fixes for them. Dunno... (my phone is rooted)
1. Battery drains faster than car can charge it. With screen on, GPS on, and data on and using navigation, the battery goes down. This hasn't happened with any of my other phones.
2. There is no simple way to go to speech recognition/input from the keyboard. On the keyboard on my last phone, there was a microphone button on the keyboard I could press to bring up speech recognition.
3. There is no widget you can put on the homepage that immediately opens up voice search. Last phone, I hit one button on the home screen and I said "set alarm for twenty minutes" or "text lisa smith I'm running late" or "Dial dominos pizza" and it just did it.
4. I can't seem to control what kind of data connection I am using. I use to be able to specify to use 2G if I wanted on the last phone.
Click to expand...
Click to collapse
1. Umm install a custom kernel/rom, my battery life is amazing with AOKP and KT747
2.I am pretty sure there is, but i dont use it
3.yes there is a google voice search widget
4.yes you can go to your more setting under bluetooth, then mobile networks. The option is there

What custom kernal do you recommend? And all the roms seem to cost me functionaloty.
Sent from my SAMSUNG-SGH-I747 using xda premium

synpax said:
What custom kernal do you recommend? And all the roms seem to cost me functionaloty.
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
KT747 its located in the original android development section, here is the thread.
http://forum.xda-developers.com/showthread.php?t=1756776
I am still running ICS though since its still to early on in JB's life cycle for GS3 development.

I wish I had #2 as well.

The latest jellybean aokp has been working flawless for me. The previous one had a couple issues but they seem to be solved. Battery life is good.

If you're using the stock keyboard, go to settings>language and input and click the cog to the right on the Samsung keyboard. Make sure voice input is checked and you'll have a mic button on the keyboard to the left of the space bar.
Sent from my Nexus 7 using Tapatalk 2

KentuckyHouse said:
If you're using the stock keyboard, go to settings>language and input and click the cog to the right on the Samsung keyboard. Make sure voice input is checked and you'll have a mic button on the keyboard to the left of the space bar.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
thanks for clearing this up! i knew there was a way, but I never use voice input/search

CaLiSwEEPeR said:
thanks for clearing this up! i knew there was a way, but I never use voice input/search
Click to expand...
Click to collapse
No problem, man. Glad I could help!
Sent from my Nexus 7 using Tapatalk 2

KentuckyHouse said:
If you're using the stock keyboard, go to settings>language and input and click the cog to the right on the Samsung keyboard. Make sure voice input is checked and you'll have a mic button on the keyboard to the left of the space bar.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
I saw that but it didn't seem to work. However, you need to long-press that settings button to get the microphone.
I've found the speech recognition intermittently is either brilliant or stupid/non-functional.

For the mic on keyboard use either the ICS or JB keyboard, if your current ROM doesn't have it, get it from the market.
Sent from my SAMSUNG-SGH-I747 using xda premium

Flash custom ROM!
Flash custom ROM and all your problems will be gone.
Instead - you will have flasher hemorrhage and seeking solutions for ROM bugs.

As far charging keeping up.... I took a short USB extension. Opened up the cable. There were 4 wires inside.... red, black, green and white. Cut the green and white wires. Strip the white and green wires coming from the phone side of the USB and short them together. Use electrical tape to tape them up.
The phone charges from the cigarette lighter at 4000-5000 milliamps. The phone charges from the electrical outlet at 9000 milliamps - 1 amp. When plugged in to in to a lighter the green and white are the data cables and are open. When plugged into a wall charger, the wires are sorted which enables fast charging. There is an app/widget called current widget I believe that shows you what you are charging at.
Sent from my SGH-I747M using xda premium

synpax said:
Coming from an HTC Vision running CM. Here are my complaints. Maybe there are easy fixes for them. Dunno... (my phone is rooted)
1. Battery drains faster than car can charge it. With screen on, GPS on, and data on and using navigation, the battery goes down. This hasn't happened with any of my other phones.
2. There is no simple way to go to speech recognition/input from the keyboard. On the keyboard on my last phone, there was a microphone button on the keyboard I could press to bring up speech recognition.
3. There is no widget you can put on the homepage that immediately opens up voice search. Last phone, I hit one button on the home screen and I said "set alarm for twenty minutes" or "text lisa smith I'm running late" or "Dial dominos pizza" and it just did it.
4. I can't seem to control what kind of data connection I am using. I use to be able to specify to use 2G if I wanted on the last phone.
Click to expand...
Click to collapse
1. Have any of your other phones had a battery with the capacity of this phone? My suggestion would be to get a 1a car charger....I'd guess your current charger puts out 500ma-750ma or about as much as charging via pc usb port. Yep, it'll take forever. But when you use a 1a charger it'll charge much faster. I have the same problem with my usb car charger....at least until my Satechi 2.1a charger arrives on Wednesday
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It won't charge any faster than using a 1a charger even though it can put out 2.1a due to the IC in the phone that regulates the charging, but having the headroom is nice for use with other devices that can use it.
2. I don't use the stock ICS keyboard, I prefer GoKeyboard myself, and on it I can choose to have the speech recognition key displayed if I want.
3. A simple double tap of the home button will launch S-Voice...no need to take up valuable homescreen space with a widget
4. That one there is not a fix for yet

This phone uses microsim.

Gadgetz said:
A simple double tap of the home button will launch S-Voice...no need to take up valuable homescreen space with a widget
Click to expand...
Click to collapse
You can also use this method if you would prefer to launch Google Voice search from the home button: http://sgs3mod.blogspot.ca/2012/07/heres-how-to-launch-google-voice-search.html

LG G4 screen turning itself on after timeout/lock

I've had the G4 since it was launched and until now been very pleased. A couple of days ago it started to turn the screen on by itself every time it timed out or I pressed the lock button... Unless it's plugged into a charger.
I've tried pulling the battery and uninstalling any recent apps I'd installed but to no avail.
Annoyingly, by the time I got myself to carphone warehouse to get it sorted I was just outside my 28 days.
Seen a lot of people having issues with the screen but can't find anyone having this exact problem. Anybody experiencing similar? Any thoughts? Cheers.
Sent from my LG-H815 using XDA Free mobile app

Guess there's not a lot of people suffering the same issue... Noticed something odd today with the battery. Never seen it drain this fast before, is there any way the screen issue could be related to the battery? It would kinda corroborate that the phone acts totally normal when it's charging... Trying to find someone else with this phone to try swapping batteries is... Difficult.
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Sent from my LG-H815 using XDA Free mobile app

Factory reset.

Done it, twice.
Sent from my LG-H815 using XDA Free mobile app

Do you have a screen protector on? If you do, is it possibly covering the light/prox sensor?

Nope, no protector, and I often manually cover the proximity sensor to demonstrate more easily what the phone's doing. Screen times out straight away and them comes back on just as quickly.

Same issue here
Sorry to drag up a thread but ive been having this issue from day 1 and its driving me MAAAAD! Press the lock screen button, the second the screen turns off it comes back on and its on the lock screen (like it would if i used the power button to unlock it)
I turned on "show touch screen touches " in developer options to see if the screen protector was touching anything but its not As far as i can tell it looks like the lock screen sensor might be dicky/weak from the factory? Major sads considering its the button I use on a hourly basis!
Any help or ideas greatly appreciated, i dont really fancy taking it back after 4 weeks to have it sent of for months to be looked at/repaired

H815P suffering the same but mine is randomly. I hardly ever notice but sometimes I just look at the phone and the screen is on.

Also same issue it s wake up randomly, screen is on suddenly and turn off, any solution?

volkie1912 said:
Also same issue it s wake up randomly, screen is on suddenly and turn off, any solution?
Click to expand...
Click to collapse
do you use greenify on unrooted phone?

vati said:
do you use greenify on unrooted phone?
Click to expand...
Click to collapse
yea, i am using greenify on unroot phone

volkie1912 said:
yea, i am using greenify on unroot phone
Click to expand...
Click to collapse
That is the problem.
if yo use the auto hibernate in greenify, it wakes up the phone, turns on the screen than after hibernation turns off the screen. That is why I use only the manual hibernation. On unrooted phone it cause more battery drain than running the pr in the background

vati said:
That is the problem.
if yo use the auto hibernate in greenify, it wakes up the phone, turns on the screen than after hibernation turns off the screen. That is why I use only the manual hibernation.
Click to expand...
Click to collapse
himm thanks for your help, also if i rooted the phone, no anymore wakeups on lock screen?

volkie1912 said:
himm thanks for your help, also if i rooted the phone, no anymore wakeups on lock screen?
Click to expand...
Click to collapse
yes, on rotted phone the grennify is working as system app in the background and makes the hibernation without waking up the phone and screen + on rooted phone you can hybernate system apps too.

vati said:
es, on rotted phone the grennify is working as system app in the background and makes the hibernation without waking up the phone and screen + on rooted phone you can hybernate system apps too.
Click to expand...
Click to collapse
Thanks for info dude[emoji106]
Sent from my LG-H815 using Tapatalk

vati said:
yes, on rotted phone the grennify is working as system app in the background and makes the hibernation without waking up the phone and screen + on rooted phone you can hybernate system apps too.
Click to expand...
Click to collapse
Hi there! thank you for the post thread! I recently got changed of my LG G4 motherboard by LG as I had another problem, and since I got back my phone it keeps turning the screen on-off randomly. I tried to change the auto-screen-off setting you described (hibernation) but the screen keeps turn on and off itself every 15secs! I even changed the phone settings to no background processing at all but same thing on and off again.. I did several factory resets, even tried not to install any app or even update the basics ones and keeps doing it randomly. I dont know what to do here please any help would be appreciated :S:crying:

turn off daydream clock in display settings
---------- Post added at 11:07 PM ---------- Previous post was at 11:06 PM ----------
choroz_niki said:
Hi there! thank you for the post thread! I recently got changed of my LG G4 motherboard by LG as I had another problem, and since I got back my phone it keeps turning the screen on-off randomly. I tried to change the auto-screen-off setting you described (hibernation) but the screen keeps turn on and off itself every 15secs! I even changed the phone settings to no background processing at all but same thing on and off again.. I did several factory resets, even tried not to install any app or even update the basics ones and keeps doing it randomly. I dont know what to do here please any help would be appreciated :S:crying:
Click to expand...
Click to collapse
turn daydream clock display settings

Hey its the sensors next the the front camera that is causing this i had this look reply typed and it just disappeared but long story short i noticed it didnt down it when the phone was facedown so i tried covering the sensors next to the front camera and it didnt do it at this point it could just be a program error or hardware problem idk how it turn off the sensors and it may look tacky but use something to cover the sensors and you should be fine im not 100% sure this is the problem im still testing but so far it works

Try disabling knock to wake feature. I recently noticed that I could tap anywhere and then again somewhere else, minutes later, and the screen would turn on. It was so sensitive that sometimes it would wake by just blowing on the screen.
To get to this setting, I created an activity widget using Nova launcher. (It's under the Settings -> Knock settings).
You can also use Better Battery Stats or Amplify to see what's keeping your screen on

fixed mine
Here you go...
Settings > Display > Motion Sensor Calibration

LineageOS 7.1.1 G900T randome blue black screen

I have a G900T running Lineage OS 7.1.1 latest build. When I am out and want to use my phone I keep getting this screen, and I want to know how can I fix it. I keep having to remove my battery and reboot to clear it up until it happens again. Any ideas?
https://www.dropbox.com/s/eeir3ey2u6sy9gl/2017-04-08%2014.25.56.png?dl=0

I am just wondering if I am the only one having this issue?

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我從使用 Tapatalk 的 SM-A800IZ 發送

The image is not showing.

Maverick923 said:
I have a G900T running Lineage OS 7.1.1 latest build. When I am out and want to use my phone I keep getting this screen, and I want to know how can I fix it. I keep having to remove my battery and reboot to clear it up until it happens again. Any ideas?
https://www.dropbox.com/s/eeir3ey2u6sy9gl/2017-04-08 14.25.56.png?dl=0
Click to expand...
Click to collapse
Are you saying it doesn't happen at home? Maybe something to do with location or data? Or is it just not waking up properly?
(When I first instilled 7.1.1 I had a black screen from boot but I had the notification bar showing and other layers like power menu would show, is your whole screen black)

IronRoo said:
Are you saying it doesn't happen at home? Maybe something to do with location or data? Or is it just not waking up properly?
(When I first instilled 7.1.1 I had a black screen from boot but I had the notification bar showing and other layers like power menu would show, is your whole screen black)
Click to expand...
Click to collapse
That is exactly what I am saying. Sometimes I just look to see the time. When I press the power button to wake it up when it does happen which is quite a bit and I never know when.
When it does happen it will wake on that screen and sometimes I will see the lock screen for a second then it goes to that. I need to then remove the battery and reboot the phone.
This mostly seems to happen when I am out. Usually when I need to do something at the worst time.
Then if I am looking something up for someone, I need to be telling the person holdup while I reboot my phone.

Maverick923 said:
That is exactly what I am saying. Sometimes I just look to see the time. When I press the power button to wake it up when it does happen which is quite a bit and I never know when.
When it does happen it will wake on that screen and sometimes I will see the lock screen for a second then it goes to that. I need to then remove the battery and reboot the phone.
This mostly seems to happen when I am out. Usually when I need to do something at the worst time.
Then if I am looking something up for someone, I need to be telling the person holdup while I reboot my phone.
Click to expand...
Click to collapse
strange that you get that screen, otherwise it sounds a bit like people who have lock screen issue & have to reboot to get phone working again. Related to display &/or touch problem I think
This is often caused by dropping their phone, have you? Knocking it on different edges sometimes fixes it, but you need to be careful not to break screen! Though better solution probably is to open it and reseat pcb, screen connectors etc.
Also using magnetic phone covers can do this, I think.
Else can't think of anything apart from software (affecting your phone only it seems) maybe clear data on lock screen service app .... maybe clear any profiles you are using ...... else the dreaded factory reset or clean flash, but I'm sure you know that and don't want to do it!

IronRoo said:
strange that you get that screen, otherwise it sounds a bit like people who have lock screen issue & have to reboot to get phone working again. Related to display &/or touch problem I think
This is often caused by dropping their phone, have you? Knocking it on different edges sometimes fixes it, but you need to be careful not to break screen! Though better solution probably is to open it and reseat pcb, screen connectors etc.
Also using magnetic phone covers can do this, I think.
Else can't think of anything apart from software (affecting your phone only it seems) maybe clear data on lock screen service app .... maybe clear any profiles you are using ...... else the dreaded factory reset or clean flash, but I'm sure you know that and don't want to do it!
Click to expand...
Click to collapse
Yeah this only started happening after installing Lineage OS 7.1. I will try another lock screen. Hopefully that will take care of it. You are right I don't want to do a reset.

Maverick923 said:
Yeah this only started happening after installing Lineage OS 7.1. I will try another lock screen. Hopefully that will take care of it. You are right I don't want to do a reset.
Click to expand...
Click to collapse
hope it works or an update to a future release of LOS just fixes it, as happened with my notification bar

A5 2017 vibration problem

Sometimes my phone's vibration is not working, I need to shake it first before it start working again. It clearly is a hardware problem. Just want to ask if anyone had this problem too. And if you have some advice that will be totally appreciated. Thank you.

Yeah i realized my phone not vibrating when i receive phone calls even though i set it to vibrate.

did anyone found a solution? Mine does the same, tried everything. sometimes the vibration is there and sometimes it's completely gone ...

sometimes the vibration feedback comes back after shaking the phone heavily. So I guess it is a hardware problem (loose connection)

michielbangels said:
sometimes the vibration feedback comes back after shaking the phone heavily. So I guess it is a hardware problem (loose connection)
Click to expand...
Click to collapse
if shaking the phone triggered the vibration, then i suggest you contact samsung for repair or replacement.

Hi, you aren't alone. I got the exact same problem on my A7 2017.

Have the same problem. It has occurred after the oreo update.

Hello, everyone... I'm from Brazil, and I have the same problem too. I've just shaked heavily my Samsung Galaxy A5 2017 and it came back to works...!! Definitely looks like a hardware problem. :-/

patz0110 said:
Sometimes my phone's vibration is not working, I need to shake it first before it start working again. It clearly is a hardware problem. Just want to ask if anyone had this problem too. And if you have some advice that will be totally appreciated. Thank you.
Click to expand...
Click to collapse
ogirdornavi said:
Hello, everyone... I'm from Brazil, and I have the same problem too. I've just shaked heavily my Samsung Galaxy A5 2017 and it came back to works...!! Definitely looks like a hardware problem. :-/
Click to expand...
Click to collapse
+1 for hardware problem. facing the same issue for a320
need to share it heavily or until it wont work anymore, need to open the backdoor, open using screwdiver, find the vibration module on the bottom right part of phone. i need to hit it couple times until the vibration work again.
but i have to test the vibration first, is it still work or not by using + & - cable (power source = 5v)
like this :
{
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Same problem here. I was using google's keyboard because.... because Samsung had to cheapen a great phone via software penalties. Whatever. All they had to do was put in a smaller battery. I'll be romming this sucker up probably past the S 12. Plenty of bloatmobiles to hose down in between. Have your vibrator, Samsung, you earned it. Save some for the carriers, too.

Dial *#0*# (If it not works, then use *#9998*842#
You can test a lot of features
If vibration didn't work give the phone good shake
If not then it HW

So, still no solution for this? Has anyone determined if the vibration module itself or the connection to it is the most likely point of failure? The vibration unit costs about 3 Bucks, I'm more worried about the waterproof seal after opening it...

I had an A5 and about 4 or 5 months in the vibration was not working properly. I just kept it off. It would work and then just quit and mess up my texts. I was using google keyboard to get the feedback. But obviously that never panned out.

Samsung A3 (2017) Vibration Unit Repair - The Incomplete guide.
Okay, because nobody asked for this, here's my update in a new thread.

I don't know if people will see my post.
But I solve it. My A5 2017 doesn"t vibrate suddenly.
In a first time I thought it was a software problem.
So I factory reset my A5 2017 but the vibrator doesn't work.
I formatted my A5 2017 using the sofware Odin on my computer in a second time.
But the vibrator doesn't work again.
I read before after shaking the phone the vibrator work for a few time.
I shook my phone and pressed Down/Up inputs to switch my phone between Vibrator/Sound mode. The vibrator ran just one time.
Finally I call the *#0*# and select Vibrator.
Nothing happened.
I shook hard the phone during the *#0*# vibrator test and suddenly it began to vibrate. And I let it vibrate during whole the test (around 10/20 sec).
My A5 2017 run perfectly after day after day.

leo31 said:
+1 for hardware problem. facing the same issue for a320
need to share it heavily or until it wont work anymore, need to open the backdoor, open using screwdiver, find the vibration module on the bottom right part of phone. i need to hit it couple times until the vibration work again.
but i have to test the vibration first, is it still work or not by using + & - cable (power source = 5v)
like this :
Click to expand...
Click to collapse
Are you on crack?
Here are the facts:
Vibration working BEFORE Oreo update.
Not working AFTER Oreo update.
Here is a misguided, foolish assumption:
This a hardware problem.
This is an intelligent response:
WHAT?

GAMPAWA said:
Finally I call the *#0*# and select Vibrator.
Nothing happened.
I shook hard the phone during the *#0*# vibrator test and suddenly it began to vibrate. And I let it vibrate during whole the test (around 10/20 sec).
My A5 2017 run perfectly after day after day.
Click to expand...
Click to collapse
Worked for me. But not for long.
The vibrator runs fast, slow, or not at all. Definitely a hardware problem, but it's long out of warranty now.