I got a second hand phone that was locked

[userAzzVUANOgb]

I brought a phone second hand and it was locked so now what did I do

[EthanPeterson]

Absolutely cooked unless you use Odin and flash it or wtv

[GaryB82]

Return it because once you reset it, the device will require the original owner's Google and Samsung accounts to regain access to the phone.

[Chiicken]

You might as well buy you a new phone , it's the best option 😊

[MrGhoul]

Return the phone! Unless you can get the previous owner to unlock the phone and have them sign out of their Samsung/Google accounts. The phone is trash.

[LadyTech22]

Or find someone that knows how to bypass the frp (factory reset protection) there are a few good sites online that can unlock it remotely for a fee. Some can be done in under 10 minutes depending on phone model and operating systems etc.

[nullandvoid]

Your best bet would be to return the phone to wherever you bought it, as they sold you a useless phone.  If you bought it from someone you know, have them log it out of their Google and Samsung accounts and de-register the device from those accounts.