This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

How did I fix the error 21 message! Can't text message!!

  • 1 reply
  • 3 have this problem
  • 10 views
  • Last reply by philipp

CassM
CassM
more options

Every time I try sending a text, an error 21 code comes up, and won't send my messages! Gggrrr! It only happens with texts..I have android phone 4.0...HELP!

Every time I try sending a text, an error 21 code comes up, and won't send my messages! Gggrrr! It only happens with texts..I have android phone 4.0...HELP!

All Replies (1)

philipp
philipp
  • Moderator
more options

Hi CassM, this is a support forum for Firefox and we probably aren't able to help you with issues about your operating system. In this case please rather contact the support of your manufacturer or your provider instead. Thank you for your understanding!