The display for the phone is blank, but the phone still works

There is a way to reset the phone in the settings menu, but with the display being black that would be impossible to get to.

I would first try restarting the phone by removing the battery, reinserting it and then holding the power button down. If that does not fix it, there might be something wrong with the display or the display back-lighting. In that case the only option would be to replace the screen.

Luckily, you may still be under warranty since the phone is designed to be water resistant. You could probably have Samsung fix it for free.

This has happened to me recently with my s5 at 4 weeks old, I sent it back to o2 here in the uk under warranty for repair. They diagnosed it as the LED for the screen is cracked and will not repair it.

Now this phone is pristine condition and is always wrapped up in an otterbox case since it first got turned on. Apparently I have "misused" the s5......WTF! Ive now wasted £700 on a phone that is useless!

Insure your phones people as the quote for the repairs was just over £300 including Vat.

Ben