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Old 09-21-2018, 01:39   #52 (permalink)
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Originally Posted by parrotgeek1 View Post
You didn't. Your sim card that you tried just happened to be defective.

The reason the original iccid is displayed and it still works is that using the iccid once works like an "unlock code" on other phones, I.e. activating with it installs a permanent authorization to use any sim until you reset the phone to factory settings
Amazing - thank you! So I could have just used my original AT&T sim to unlock the phone and then verified that the phone was unlocked by popping in a sim from a different carrier (like the SimpleMobile one I used)? Is there another way to confirm that the phone is unlocked without having to use a sim from a different carrier? I tried a couple of those IMEI checker sites and they show my phone as locked so those clearly aren't reliable.
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