The SMS housekeeper has several status reports.

1. I didn't blacklist you because all incoming calls are turned off.

2。 Only when the other party is turned on, even if it is only 1 minute, the short message you sent will reach the other party, and your mobile phone will receive a success prompt. Of course, if it is never turned on, the transmission fails.

So it can be concluded that his mobile phone has never been turned on.

There are several possible reasons:

1. The mobile phone was lost, and the person who found it threw away the sim card. The host hasn't had time to get a new card, but your relationship is close enough. If he loses his cell phone, he will contact you.

He changed his mobile phone number and kept it secret from you.

3。 Maybe something really happened, and it better not.

If you are close enough, go to him immediately, otherwise you can contact his family to ask.