I am having this exact same issue. I have enabled developer mode and turned on trails and pointer location. Both confirm that the touchscreen is simply not responding.
I have flushed the cache multiple times, uninstalled the extra apps, rerun the system auto tests (*#87#) etc.
Despite all of this I get the same thing every time. When I turn it on the touchscreen works a few seconds and then stops responding. If videos, actions etc are taking place they continue.
In addition to touch input the audio will often shut off and I have to run 're-calibrate PA' to get the audio back. This may seem like a different topic, but I would suggest that this may be related as I have read numerous complaints from people with the same issue - and yes, I did check the speaker / mic unit.
This phone is in near mint condition and has been doing this now for months.
I am a programmer and engineer so I am very familiar with troubleshooting things like this but I'm at a loss. I would love a solution. I have turned multiple people here on to the blackview phone and they went out and bought them too. Now people are all having this same issue.
If there is someone at Blackview that can work with all of us on this I'm happy to work with someone there.
I suggest looking at logs for the driver services first. I suspect these issues are related and that services are crashing. This is likely a software problem for 2 reasons:
- It starts working RIGHT away when the screen is turned off and back on without fail (look at the services that get stopped and started... namely input)
- I have had instances of the input starting to work again WITHOUT turning the screen off and back on, this is rare but has happened
- Audio will work again immediately if *#87# is run and then PA Calibrate is run. This indicates a software problem and not a hardware problem. I understand that this may seem unrelated and like a different topic but I suspect these are related issues as odd as that may sound.
Please help us solve this. I was getting ready to purchase the BV 9900 Pro,but after all of this I am super hesitant and have been encouraging others to wait on upgrading as well.