Why can't I send short messages when I put the note4 Unicom dual-card dual-standby mobile card into the card slot 2?

According to your description:

If the mobile phone can't send short messages, we suggest that you:

1. Check whether the phone bill is sufficient.

2. If two SIM cards are installed, please check whether this SIM card is activated (Settings -SIM card manager -SIM card 1/SIM card 2- activated check).

3. Check whether the information center number is entered correctly: information-menu key-settings-SMS settings-information center-set the information center number (please contact the local network operator for the information center number, and the telecom card is not set with the information center number).

4. Check whether there is virus software in the mobile phone. Check mode: Settings-Application Manager-Run-Check whether there is a Com.android.version process running. If there is this program, please uninstall, delete and restart the phone.

5. Try to replace another SIM card.

6. Check whether the machine has a firmware/system update push notification. If yes, please upgrade your phone to the latest version.

7. If it is invalid, please back up data (contacts, multimedia files, etc.). ) and restore the machine to factory settings. (Note: Please back up the relevant materials before updating the version or restoring the factory, so as not to affect the use. )

If there are still problems through the above methods, please bring the purchase invoice, maintenance card and machine to Samsung service center, and the engineer will check and deal with the machine. Samsung Service Center Address:

. Samsung . com/support/service locations . ASP

Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.