Why didn't anyone send me a text message with +86 in the front?

The description of +86 was sent by MMS or by a foreign number. Under normal circumstances, there will be no +86 in front of the text message. Look at your mobile phone and see how you send short messages, whether it is short messages or multimedia messages. Because if you send them to others by multimedia messages, others may reply to you by multimedia messages, so there is +86. You can see if your friend's mobile phone number is from other places.