I changed my mobile phone with my friend and changed my SIM card. It's in the phone book. The text messages I sent were all preceded by +86 1, and then I changed my phone number. I don't even know who

I changed my mobile phone with my friend and changed my SIM card. It's in the phone book. The text messages I sent were all preceded by +86 1, and then I changed my phone number. I don't even know who sent it. The area code of Greater China represented by +86 is actually a number with 86 in China (except Hong Kong, Macao and Taiwan). You only changed the SIM card, which proves that there are still some numbers in the phone memory, so some numbers (with +86 numbers) will not show their names. Just copy the address book stored in the phone memory to your original card.

Another reason is that those +86 messages may not all come from your SIM card, but from the information stored in your mobile phone. In this case, you don't need to look them up.