Can you unlock a used T-Mobile iphone se that s locked is it possible?

Can you unlock a used T-Mobile iphone se that s locked is it possible? - 1

If you mean carrier locked, get a pre-pay T-Mobile SIM and use it for a couple of months.
Once the phone is definitely associated with your T-Mobile account, you should be able to request an unlatch through the T-Mobile web site or customer services.

If you mean an icloud lock, there's absolutely no way around it - only the account owner can unlock it.

Yes

I don't see why not