Now the mobile phones on the market are basically all in one machine, and the back cover can't be opened. The card slot is set on the side of the mobile phone and needs to be opened with the top card pin of the mobile phone. Newly bought all-in-one mobile phone, all accessories have thimbles.
If the card needle is not taken, 1. You can insert the full-tip pen core without pen oil into the small hole and pop up the mobile phone card slot. 2. After straightening the paper clip, insert it into the small hole and pop up the phone card slot. 3. The pin is a sharp object. Slowly insert the pin into the small hole and eject the card slot. 4. Insert the thin bamboo stick and toothpick into the small hole to pop up the mobile phone card slot. Be careful not to smash foreign objects into small holes.
SIM cards are also called subscriber identity cards and smart cards. GSM digital mobile phone can only use this card. The computer chip stores the customer information of digital mobile phone, encryption key and user phone book, which can be used to identify the identity of GSM network customers and encrypt the voice information when customers talk.
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