Is my S5 hacked or something?

[Android Central Question]

Took it to the store yesterday for a new battery, and the dude took it in back for 5 mins for no apparent reason. Wondering if maybe he did something to it? (Sitting at home today and suddenly my phone screen changes to the following):

Black screen w big green robot in middle.
top left in red:
FACTORY MODE
In white:
PRODUCT NAME: SM-G900V
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
REACTIVATION LOCK: OFF
In grey:
QUALCOM SECUREBOOT: ENABLE (CSB)
AP SWREV: S1, T2, A1, A2, P1
In blue:
SECURE DOWNLOAD : ENABLE
In red:
VOC START

Under green robot:
Downloading...
Do not turn off target!!

Thanks all you Android Legends!

 

[Rukbat]

Since you're not downloading anything (you'd be running Odin and the phone would be connected to your PC if you were) just hold the power button in until it restarts.

If it happens again, bring it back (and if it's a company store ask for the manager) and ask them to take it off factory mode. (Therre's no reason to take a phone into the back to change the battery - he could have gone to the back without the phone to get the battery, brought it back and changed it in front of you.)