[The phone is locked]

Hi! I have changed my sim card on my phone, so my phone has been locked.

I entered the correct password. However, it still show that the phone is locked. I tried all ways to unlock the screen but the phone looks like freezing. It is really inconvenient. I highly regret to have this mobile antivirus on my phone.

Please some help. It is totally urgent for me, I can't do anything without my phone.