Not happy!

[RoRoMac]

Since doing a software update a few weeks ago and one again this afternoon (which I thought might fix the problem) I have been getting the black screen of death all day long with a green line at the top of the screen. And the phone gets so hot you can barely hold it!! Samsung S9, was working perfectly until this!! Sort it out Samsung. 

[GoanGeek]

Would try a wipe cache to clear any issues.

[Susieque]

I have software to install, tells me it may affect my data and photo's if they are not backed up, do you suggest I shouldn't install it??

[GoanGeek]

Always good to backup incase things go south with major updates.