Joke Collection Website - Blessing messages - Samsung s7 shows that the cm card has been pulled out. Why?
Samsung s7 shows that the cm card has been pulled out. Why?
The following steps are recommended:
1. Turn it on and off again, and check whether the mobile phone card is inserted in place and the direction is correct.
2. Take out the SIM card and clean the metal contacts of the SIM card with rubber. (Is the sim card in poor contact? )
3. Try to replace the sim card (regardless of whether the SIM card is aging or damaged).
4. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings.
If the problem still exists, it is recommended to send the mobile phone to the nearest Samsung service center for testing and maintenance.
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