Samsung note2 dual-card Unicom version can't send text messages with mobile cards.

Hello. Samsung Note2 can't send text messages, which probably has nothing to do with the phone itself. It is very likely that the user has modified the number of Samsung Note2 SMS Center, which will cause Samsung Note 2 to be unable to send SMS. In this regard, users only need to call the mobile customer service hotline 10086 to consult the number of the SMS center, and then reset the center number. In this way, the problem of how Samsung Note 2 can't send text messages is solved.

Another possibility is to check whether your mobile phone is in arrears, and Samsung Note 2 can't send short messages if it is in arrears.