Note 3 Add multiple SMS recipients from contacts.

According to your description, I suggest you try the following methods:

1. I suggest you go to Settings-General-Applications-All-SMS-Clear Data.

2. Restart the phone to see if there is a signal problem.

3. Check whether the number of the information center is correct: Information-Menu button in the lower left corner-Settings-Information Center. The number of centers in different operators and regions is different. Please contact the network operator for confirmation. The number of the information center must be preceded by "+".

4. Try to replace another sim card, or wipe the contact point between the mobile phone card and the mobile phone (whether the SIM card is in poor contact).

5. It is recommended that you try to upgrade the firmware. Operation: Settings-About Equipment-System Update. Before upgrading, please back up the data in your phone, such as contacts, photos, videos, etc.

6. Please back up the data in your mobile phone (such as contacts, text messages, photos, videos, etc.). ), and then restore the phone to the factory settings.

If you have any comments, suggestions and comments, please click: support.samsung.com.cn/survey.