Samsung SMS sending failed, please solve it.

Dear Samsung users, your model is not listed on the mainland, and we have no relevant targeted information. For similar problems of domestic vehicles, please refer to the relevant setting method: 1. Restart the phone to see if there is a signal problem. 2. Settings-Application Manager-Slide Screen Options (All)-Find Information-Click Enter, clear the data and try. 3. Try to replace another SIM card. 4. Check whether the mobile phone is equipped with security guards or third-party SMS software, and test it after unloading. 5. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings. If the above method still fails, please send the equipment to Samsung Service Center for engineers to check the machine. Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.