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[SOLVED] Strange vibration behaviour
Posted: Tue Jan 16, 2018 2:13 pm
by jman0
I'm on 20171227 firmware and I'm seeing that vibration acts erratically, which didn't do before.
I'm not using battery saving mode. When I unlock the phone, vibration doesn't work. If I'm using the keyboard, which I have set up to vibrate on every key press, it doesn't vibrate. After I've pressed some keys, it starts vibrating, but the vibration stops again if I stop touching the screen, and begins working again after some more key presses.
The same applies to the capacitive buttons and the fingerprint scanner. If I touch the back button, it doesn't usually vibrate. If I touch it several times in a row, it begins vibrating again and keeps vibrating, for as long as I keep touching it. If I stop touching the button, vibration stops working, but will work again after a few more touches of the button. If I lock the phone and unlock it right away with my fingers, the fingerprint scanner vibrates, but if I lock the phone and wait for a longer time to unlock it again, the fingerprint scanner doesn't trigger the vibration.
Could it be related to the solution implemented to solve the phone not entering deep sleep issue? Vibration worked like a charm on previous firmwares.
Re: Strange vibration behaviour
Posted: Tue Jan 16, 2018 9:49 pm
by blackview_admin
Thanks for your accurate feedback!
Did you flash your device to the 20171227 version or did you update to it by OTA?
Re: Strange vibration behaviour
Posted: Wed Jan 17, 2018 7:17 am
by jman0
blackview_admin wrote:Thanks for your accurate feedback!
Did you flash your device to the 20171227 version or did you update to it by OTA?
Both. The first time, I updated via OTA upgrade, and them I flashed it. The same happened both times.
Re: Strange vibration behaviour
Posted: Wed Jan 17, 2018 10:12 am
by blackview_admin
jman0 wrote:blackview_admin wrote:Thanks for your accurate feedback!
Did you flash your device to the 20171227 version or did you update to it by OTA?
Both. The first time, I updated via OTA upgrade, and them I flashed it. The same happened both times.
Did you also perform a factory reset after the flashing?
Re: Strange vibration behaviour
Posted: Wed Jan 17, 2018 6:47 pm
by jman0
blackview_admin wrote:jman0 wrote:blackview_admin wrote:Thanks for your accurate feedback!
Did you flash your device to the 20171227 version or did you update to it by OTA?
Both. The first time, I updated via OTA upgrade, and them I flashed it. The same happened both times.
Did you also perform a factory reset after the flashing?
Re: Strange vibration behaviour
Posted: Wed Jan 17, 2018 7:53 pm
by blackview_admin
Can you flash back to the previous "working" firmware?
I need to check if it's an hardware fault or not.
Re: Strange vibration behaviour
Posted: Thu Jan 18, 2018 8:11 am
by jman0
blackview_admin wrote:Can you flash back to the previous "working" firmware?
I need to check if it's an hardware fault or not.
By the way, I did factory reset the phone yesterday (although I had previously done it too) but it didn't solve anything. I'll try to downgrade if I have the time.
Re: Strange vibration behaviour
Posted: Thu Jan 18, 2018 9:29 am
by blackview_admin
jman0 wrote:blackview_admin wrote:Can you flash back to the previous "working" firmware?
I need to check if it's an hardware fault or not.
By the way, I did factory reset the phone yesterday (although I had previously done it too) but it didn't solve anything. I'll try to downgrade if I have the time.
I'll wait for your feedback!
Re: Strange vibration behaviour
Posted: Thu Jan 18, 2018 12:26 pm
by jman0
blackview_admin wrote:jman0 wrote:blackview_admin wrote:Can you flash back to the previous "working" firmware?
I need to check if it's an hardware fault or not.
By the way, I did factory reset the phone yesterday (although I had previously done it too) but it didn't solve anything. I'll try to downgrade if I have the time.
I'll wait for your feedback!
I just went back to 20171114 version. I can't go any further, since flashing a version older than that one would brick the phone. I've noticed the same behaviour.
I'm not sure whether this is a hardware issue, because I've tried an app which tests the various parts of the phone and the vibration test works all the time, but then I find the same behaviour on the capacitive buttons
Re: Strange vibration behaviour
Posted: Thu Jan 18, 2018 7:16 pm
by blackview_admin
jman0 wrote:I just went back to 20171114 version. I can't go any further, since flashing a version older than that one would brick the phone. I've noticed the same behaviour.
I'm not sure whether this is a hardware issue, because I've tried an app which tests the various parts of the phone and the vibration test works all the time, but then I find the same behaviour on the capacitive buttons
Sorry to say that, but if the problem persists after a firmware downgrade + factory reset, it really looks like an hardware fault.
You should contact your selller for a replacement under warranty. Hardware faults can happen, also if they're annoying as hell.