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What is happening with 3G?
Never's profile

New Member


2 Messages

Monday, February 14th, 2022 3:46 PM

App bug: App says scanned Serial number is invalid (with fix)

Just in case anyone else has this problem.

I Installed the Cell Booster app on Android. When I went to setup an AT&T Call Booster, I scanned the blue QR code on the booster. It entered the Serial number, but them told me it was invalid.

Quit and retried several times.

A close check revealed that scanning the QR code left off the last digit. After I added the last serial number digit manually, it let me go to the next step.

Community Support


221.4K Messages

2 years ago

Thank you for that information @Never!


We're glad to hear that you were able to find a workaround and we appreciate you sharing it with our other customers. We'll be happy to escalate this feedback for you. Thank you for reaching out to our Community Forums.


Heather, AT&T Community Specialist

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