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patnt2018's profile



1 Message

Wed, May 30, 2018 1:03 PM

Errors entering new SIM Card Number for PrePaid plan online

I keep trying to update my device SIM number and IMEI number at https://www.paygonline.com/websc/simupdate.html but keep receiving system 'We seem to be experiencing system issues. Please try again later.' errors.  I already have a prepaid account but need to switch SIM cards and device.


Community Support


194.9K Messages


Hello @patnt2018,

I understand you need to activate your new SIM card by updating the number on your PREPAID account.  It can be a hassle at times, but we can help!

This article will be about replacing a PREPAID SIM card.  Please click here for the proper link to activate this. This link will provide further information about activations.  If you still need help, we can look into this further for you.  Due to the nature of your situation, I will be sending you a Private Message to gather further details.  Please look for this message in your Forum’s inbox. 


Adam, AT&T Community Specialist

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