I saw my husband's mobile phone receive a message from Jinjiang Inn to buy a gift package. Is that check-in?

You said that you saw your husband's mobile phone receive a text message about Jinjiang Inn buying a conference gift package. Is that the check-in procedure? I don't think so. If you really suspect that your husband is opening a room outside, if he has that thing, you don't have to worry, it is slowly giving away. If you think again and really want to know, you can search on Baidu to see if he is checking in outside.