Quote:
Originally Posted by keebs29
@truoc444: what is the advantage of unlocking my phone? WIll using the website u provided to get unlock codes harm my cliq??? I am going to Canada in May and want my phone unlocked, but, i want to make sure it will actually unlock. Also....why is it we have to put in a sim card from ANOTHER carrier to unlock the phone? It doesn't erase THAT persons sim info does it? I'm sorry...im new to the "unlocking" world. 
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sim unlock is just to remove a restriction code on the phone not the sim. (it will not do any thing to the sim or the phone, sim unlock is not illegal. the only reason carrier put that there is to prevent ppl from taking a contract out canceling that contract and useing that phone on a different wireless carrier. the price that you pay on your monthly bill is subsidised for the phone as well, that why when u cancel your contract you get a $200 ETF)
placing a different carrier sim into the phone is just to activate a program that states sim is locked please enter subsidy unlock code.
after you sim unlock your device you can place any GSM sim into that device and it will work as long as the radio frequence permits(AT&T 3g network is different to T-Mobile 3g's network only for data not voice... voice and data EDGE will work but not hspda or 3G)
also if you travel as u said you will not have to pay roaming and other international fees ($400 or higher bill)