S9 ultra curve lines while using pen

[zeta5]

I am facing a problem that while writing on tmy tab on some areas of screen i get curve lines

[Stareye]

Remove the case and then try again on the same area

[zeta5]

Yes bro it worked thank you so much

[Stareye]

This because of the magnets used in the covers

[Stareye]

They interfere with screen so choose your cover wisely

[zeta5]

I get it but on middle of screen it still occurs why?

[Stareye]

Without cover too?

[zeta5]

Yes bro

[zeta5]

And on my cover there is only a one magnet

[zeta5]

Means on that part it doesn't write it leaves the space there