Quote:
Originally Posted by zachberry
what is the main advantage of unlocking it?
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Most BlackBerrys come "locked" to a specific carrier. You can only use them with a SIM card from that carrier.
Unlocking a BlackBerry (or any locked phone) allows you to use another carriers SIM card in it.
Please note that when using another carriers SIM card in a BlackBerry, you have to ensure that the SIM card has a BlackBerry Data Plan on it, otherwise you will just have voice and SMS text on it. No data at all.