I am a non Verizon customer. I'd like to remove the sim lock on the Droid 4. Installing another rom apparently doesn't work. What is the best way to remove the Sim lock without calling Verizon? I'm not a customer so they can't help me Do I need to contact a sim lock removing website or are there other tricks? Did anyone else remove the Verizon simlock and eliminating the " This Sim is from an unknown source " message? Thanks in advance.