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

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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!

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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!