Try to restart your phonecheck If there is any software update, if any update the softwarerun a diagnose test using this Samsung members appreport this problemuninstall any unrequired app that you've downloaded apart from playstoreI hope this might h...
try casting your screen to other device and if you can still see the lines on the other screen it's some software issue but if you cannot see the lines on the other device it's a hardware issue and cannot be fixed via software it is recommended to go...
