Not sure what you mean by downside or regret. It does wipe your phone completely including any pics or music you have stored on there so you would need to back up everything or save it to your computer.
Is there any downside or regret to unlocking? I just want to make sure before I do it. I want to get the 4.0.4 leak
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And you can always lock it back if you ever need to.
will unlocking void my warranty? That is my only last concern.
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