Touch screen problem, I reproduced! Twice! Problem exists on Oreo!

[ztcontrol]

i'm from china,

sorry about my english.

so many people face this problem, 

the touch screen seems not so funtional,

i find it's a VERY LARGE LAG in fact

in the vedio below, at 24sec, you can see 

a short line i painted is not displayed immediately

when i paint next row, it displayed

https://youtu.be/l9vgGZeJj1Q

[Lord_viridis]

I really don't see it..

[ztcontrol]

[Uliwooly]

@ztcontrol

What are we looking at? 

settings > about phone > diagnostics > test > test touchscreen 

[ztcontrol]

in the gif i post,

focus on row 4, column 5, 

i touched the screen there, but no line display

and when i touch next line, it displayed

[Uliwooly]

@ztcontrol

I still don't see the problem, install AZ screen recorder > follow my test steps > start recording the screen when you test the touchscreen 

I don't understand what are we supposed to see on the video

You can also contact Sony directly >>> Local support

[SpicyMochi]

Based on his video, around 00:22, 4th row most right dot/line, he tapped it but not registered. However, the following tap register again. Then around 00:28, on the 7th row, it happened again.

I wonder if this issue only found on dual sim variant. Maybe can try a software repair via Xperia Companion.

[ztcontrol]

Yes, you are right, I mean that is the phenomenon
the phone has been returned to sailer
Now I recall, the first day of the phone just seems to be no problem,
after upgrade the system, the next day I found the problem

Now I bought one again, because I still liked the phone

[gagge1000]

Does the new one seen to have the problem asewell or not?

[ztcontrol]

new phone arrived, 

also has problems,

i find a new method to test this problem

paint short line like this,

you do not to paint very fast, 

you could paint lines between a 1second interval, 

you will see, sometimes the line just painted doesn't display

and when you paint next line , the prev line displayed