How to Unlock Your iPhone When It Says "Insert SIM Card With No Pin Lock to Activate iPhone&quo
- 1). Disconnect the iPhone from iTunes. Push the end of a paperclip into the hole next to the iPhone's SIM tray and push it in.
- 2). Remove the SIM tray from the iPhone. Push out the third-party SIM card and set it aside for later use.
- 3). Insert an AT&T SIM card face-down. Replace the SIM card and press it back in. Wait for AT&T's name to re-appear in the upper left corner of the screen.
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