Original Poster
Liam Schuler

Can't send message with CARD 1, error 21

Just got a Nexus 6P for Christmas, was working fine for the least few days and now today this error messages pops up and a can't send any text to anyone. Can someone help? 
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All Replies (1)
Hi Liam,

Welcome to the Nexus Help Forum.

For the Messenger error code 21 your seeing on your Nexus 6P, I did some research which I found the following info on AT&T's website. Please try out the suggested troubleshooting steps below.

Temporary errors

Most temporary errors occur with heavy traffic on the network and normally resolve quickly. We apologize for any inconvenience that this causes.

Any of the following error codes or messages indicates one of these temporary problems:

  • TAE 1, 2, 4, 6, 8, 14, 15, 21, or 46
  • Temporary Error 17
  • Error 'O3Farm'
  • Launch FFC-1
  • LaunchEmptyResponse

Resolution and troubleshooting

Most of these issues are resolved in just a few minutes, though some may take as long as a few hours. The troubleshooting steps below can help you regain access to your account.

First, refresh your Web browser, and then retry accessing your AT&T email account. If this doesn't work, please proceed through the following steps:

  1. Check that you're using the latest version of one of our supported browsers. Update or switch browsers, if necessary.
  2. Log out of AT&T email on all desktop and mobile devices and programs.
  3. Clear your browser's cache and cookies.
  4. Restart your browser, and log in to your AT&T email account.

If these steps haven't resolved the error, try accessing your account again later.

Let me know if this was helpful in resolving this error message on your Nexus 6P smartphone.


If my answer or any other suggestions in this post helped resolve your issue, please press the "Mark as best answer" or use the ribbon icon to mark this as a "best answer".

If your still having problems finding an answer to your Nexus issues/questions, try using the search bar to see if you can find an answer from the archived threads in the forum.

Questions about Marshmallow 6.0? Check out Scott's Marshmallow guide for some helpful info.

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