Is there anything in the hotel that can open a mobile phone card slot?

Toothpick. In the hotel, you can use a toothpick to open the card slot of the mobile phone, which is where the card is inserted. There are two kinds of card slots in mobile phones, one is the sim card of mobile phones, and the other is the TF card of memory cards. SIM card stores the information of digital mobile phone customers, encryption keys and the user's phone book on the computer chip, which can be used to identify the identity of GSM network customers and encrypt the voice information when customers talk.