You can check to see if your iPhone is unlocked from a carrier using any of a few different methods.
If you want to view your call history on iPhone, you can open the Phone app and view the "Recents" tab.
How-To Geek on MSN
Is Your iPhone Real? Here’s How to Check
To verify this, find your iPhone’s serial number. Go to Settings > General > About, then long-press the "Serial Number" to ...
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