So, I am trying to unlock an AT&T iPhone that I purchased off of eBay, but it keeps saying "Looks like the IMEI number you entered doesn’t match an AT&T device." even though I'm sure it is an AT&T device because I can't use it with any other carrier. I don't think it is blacklisted or have any issues because I was able to use the phone with H2O wireless perfectly fine for over a year. Other answers say that I should be on the AT&T plan for at least 6 months, but I don't want to spend extra on getting an AT&T plan again. Any help is appreciated!
Because the phone was purchased secondhand, we would not be able to investigate why it is not in our system. It may be possible to enter it into our systems by starting service, but the device would still have to meet the time requirements of 60 days postpaid or 6 months PREPAID to be eligible for unlock.
Dawn, AT&T Community Specialist
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