Mobile phone automatically deletes 10086 SMS.

Hello, I suggest you put the sim card into other mobile phones to see if there is the same problem. If the problem still exists, there is something wrong with the sim card. I suggest you take the relevant procedures to the business hall to check the card. If this problem is not found on other mobile phones, it may be a problem with the mobile phone system that causes sim to fail to recognize it normally. I suggest you contact the mobile phone manufacturer for consultation.