Phones often ship with a SIM lock that ensures they can only be used with a single carrier. Unlocking a phone allows it to be used with any carrier.
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484 views
Android and sim-lock
I'd like to know if android phones are sim-locked. Given that they are open-source and have community images it should be 'tricky' to sim-lock one but I prefere to ask.
Also - do I need to unlock if ...
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What is the difference between jailbreaking and unlocking an Android? [duplicate]
Possible Duplicate:
What is the difference between: Rooting, Jailbreak, ROM, Mod, etc
Is either possible, legal, contractually legit and does either damage the phone?