How can correct the error 104 for my andriod phone texting

[Android Central Question]

Haven problem texting

 

[B. Diddy]

Welcome to Android Central! Which phone, and which carrier? I see lots of posts about this for Sprint and related MVNOs. Someone suggested adding a 1 in front of the 10 digit phone number: https://www.reddit.com/r/NerdsandSt...nt_texting_104_error_fix_add_an_1_before_the/