Whys is my S5 vibrating when the power is on but screen is black?

anyone have this issue?

Must have a defected phone

Did you happen to sit down, lean or kneel on the phone? This happened to me when I accidentally kneeled on my S4. The screen became unresponsive but I still got notification sounds and vibrations. Basically, your screen/digitizer damaged from the sounds of it. :(

You probably damaged the phone internally. If it's still under warranty or if you have insurance I would put a claim through a defected phone

Posted via Verizon Galaxy S5😎

It was a warranty replacement phone from tmobile and it was sent to me..the same day I received it it cutoff and started doing that...

Then you need to call them and let them know so they can send you another one

Sent from Verizon Galaxy S5 😎

You should be good from there

Sent from Verizon Galaxy S5 😎

Ok thank you

Will be getting my S5 back tomorrow....Samsung said it was a software issue and they exchanged battery and charger....😊

i was busy on my phone and the nxt minute a black screen.it makes the message tones but thats it