Troubleshoot your device issues
J

New Member

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2 Messages

Wed, Apr 29, 2020 2:45 AM

How to activate a sim card with this error: "The SIM card for the ICCID you entered is already in use and cannot be activated again"

I have an old iPhone 8 that I want to add for a second line. The 8 was my own phone purchased from and used on my AT&T account. When I go to add a new line by checking the sim card, the AT&T tool recognizes the IMEI but not the ICCID. It gives the error, "ICCID not found". WHen I go to the AT&T "Device information" page, the ICCID info gives me this error: "The SIM card for the ICCID you entered is already in use and cannot be activated again. If your device is not working properly with this SIM card, please order a new SIM card before you activate your device." Any advice for next steps?

dwill05

ACE - Master

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6.5K Messages

2年前

Has the number that’s on the SIM card been used in a newer phone? When you activate a new phone with the same number, the old SIM is deactivated and can’t be reused. If you want to use your old phone to add a second line, you’ll need a new SIM with the new second number.

New Member

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2 Messages

Ah okay. Thank you!

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